Abstract: A heat exchanger having a number of sheets retained in spaced relationship with one another by projections outstanding from the sheet surfaces. Some at least of the sheets are provided with return flanges and the arrangement is such that return flanges of a sheet lie contiguous with an adjacent sheet so as to define therewith a fluid flow passage. The flanges of the next adjacent sheet are angled with respect to those of the first to define a second passage which extends in a different direction. Two sets of passages are formed thereby and the sheets constitute heat transfer means between adjacent passages. Each set of passages forms a fluid flow conduit. The pack is formed without cementing or welding the sheets together.

Abstract: A permanently attached lock for wheeled vehicles, such as bicycles or the like, wherein the bolt of the lock extends interiorally of the tubular head and fork stem and is locked therein to prevent rotation of said fork stem. Means are provided for anchoring a wire rope or restraint on said housing to effectively prevent theft of the vehicle when the rope is wound around a metal post or rack.

Abstract: A leaf-spring supported, free-floating rocker undercarriage for a swivel chair wherein the spring flexural axis corresponds to and the swivel axis intersects with the rocking axis of the chair for support of the same.

Abstract: A self-piercing riveting system comprising a headless rivet made from steel or a suitable material that provides compressive strength superior to that of the materials to be riveted together and of a height or thickness equal to the sum of the materials to be riveted, the said rivet having flat end surfaces and its body being peripherally concaved between its ends, a die having an opening therethrough of the size and shape of the piercing end of the rivet, and a punch for driving the rivet through the materials to be fastened, the said die and punch each being provided with staking lugs for engaging the margins of the pierced opening through the said materials so as to cause the materials to flow radially against the concaved body of the rivet.

Abstract: A new and distinct cultivar of pot chrysanthemum plant characterized by its single flower form and flowers which have several rows of pink ray florets which possess good substance and long life and which have a minimal production of pollen. This new variety is not temperature sensitive, has an upright pot habit and good breaking ability, and an abundant production of flowers when grown as a spray plant.

Abstract: A new and distinct cultivar of chrysanthemum characterized by its single flower form, the clear yellow of its ray florets which do not bronze when finished cool, and flowers which are 3 to 31/2 inches in diameter when grown as a spray pot plant. This plant is also distinguished by its vigorous and upright pot habit which is adaptable to cut flower production and by its abundant, deeply serrated dark green foliage.

Abstract: A new variety of chrysanthemum plant originated as a sport of the cultivar No. 2 Yellow Albatross and distinguished from its parent by its lighter flower color, larger flower size and more incurved flower form, longer form retention, and increased stem diameter and length.

Abstract: A new and distinct variety of African violet plant for greenhouse culture and potted plant production distinguished by the purple violet coloration of its abundant flowers which are borne on strong upright peduncles and held well above a horizontally spreading abundance of variegated dark green leaves of a generally orbicular shape, the flower petals being of both light and dark coloring in each blossom and most having a fine white marginal edging, and the foliage having an attractive quilted velutinous texture which enhances the appearance of the flower mass.

Abstract: A new variety of kalanchoe plant most suitable for greenhouse culture as a pot plant and capable of year around flowering under photoperiod control conditions, characterized by its intense red florets which range from about 10 to 12 mm. in diameter, a uniform 10-week flowering response, a medium plant height with medium sized, glossy foliage, and an extended blooming period due to several weeks of continuous flower bud development.

Abstract: A new variety of kalanchoe plant intended for greenhouse culture as a pot plant and suitable for year around flowering with photoperiod control, characterized by the intense rose pink color of its florets which range from 10 to 12 mm. in diameter, a uniform 10-week flowering response, a medium plant height and an extended blooming period due to several weeks of continuous flower bud development.

Abstract: A kalanchoe cultivar for greenhouse culture as a potted plant and suitable for year around flowering with photoperiod control, characterized by its intense orange colored florets of medium size which exhibit minimal fading upon aging and which bloom over an extended period due to several weeks of continuous flower bud development. This cultivar is a plant of medium height with an abundance of relatively large glossy foliage at its base, a uniform 10-week response, and a strong resistance to powdery mildew.

Abstract: A cultivar of kalanchoe for greenhouse culture as a potted plant, suitable for year around flowering under photoperiod control and characterized by its intense orange-red flowers of medium size which exhibit minimal fading, its medium plant height with medium sized glossy foliage, its 10-week flowering response and its resistance to powdery mildew.

Abstract: A new and distinct tropical indoor variety of Aralia distinguished by its light green leathery leaves which have a silver white margin completely around the tri-pinnately lobed leaf outline, by its more self-branching and compact growth habit, and by its more abundant densely growing foliage.

Abstract: A new variety of Pieris bush characterized by the dark green leaves which are extremely thick, deeply serrated, have a waxy appearance when mature and remain glossy all year round.

Abstract: A new and distinct variety of kalanchoe particularly suitable for year-around four or six inch pot plant production and distinguished by its dark red flowers held high above an abundant display of large, shiny, dark green leaves. This plant has a ten to twelve week response, a strong, vigorous and upright growth habit, and a profuse production of blooms borne on strong, rigid stems.

Abstract: A new variety of poinsettia plant having the important characteristics of the red variety Gutbier's V-14 (U.S. Plant Pat. No. 4,384), known commercially as "Glory", including the unique ability to produce numerous side shoots on its stem and the production of bracts with short petioles which prevent tubing, but distinguished by the fact that its bracts have a distinctive pink color.

Abstract: A new variety of poinsettia plant distinguished by having the unique characteristics of the red GUTBIER'S V-10 (U.S. Plant Pat. No. 4,235) in all respects except that the new plant has a distinct white color.

Abstract: A new and distinctive variety of poinsettia plant distinguished by the distinctive coloration of its bracts, which are marbled with shades of white and pink, and further characterized by being substantially identical with the red GUTBIER'S V-10 (U.S. Plant Pat. No. 4,235) except with respect to color of the bracts.

Abstract: A new poinsettia cultivar which is substantially the same as the variety Gutbier's V-10 (U.S. Plant Pat. No. 4,235) with respect to form, growth and blooming habits, differing only that this new variety has a pleasing and distinctive pink coloration of its bracts.

Abstract: A new and unique chrysanthemum for Fall gardens (early response) or for year-around four inch pot production (four weeks response), distinguished by its many vibrant pink daisy-like flowers, having bright yellow centers, borne on strong, upright stems; the plant having a vigorous, upright growth and profuse blooming habit whereby the plant forms a mound of color when garden bloomed in the Fall.