Portable radiant electric heater

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of a portable radiant electric heater showing our new design;

FIG. 2 is a front elevational view of the portable radiant electric heater on an enlarged scale;

FIG. 3 is a side elevational view of the portable radiant electric heater, the opposite side not shown being a mirror image thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D189410 December 1960 Relation
D225851 January 1973 Cowan
D259892 July 14, 1981 Boekamp
D267424 December 28, 1982 Boldt et al.
Other references
  • Boekamp Advertisement, "Energy Conscious America Needs Efficient Heating". Ultra-Quartz Corp. Instruction Sheet (Two Pages). Boekamp Inc. Form No. 77920R. Ultra-Quartz "People Heater" Literature Sheet. Welco Quartz Heater (Retailing Home Furnishings, Jun. 30, 1980). Thermo-Tech Corporation Quartz Heater (Retail Home Furnishings, Jun. 30, 1980). Betco Quartz Heater Literature Sheet. Mr. Heater Literature Sheet (Two Pages). Hamilton Beach Quartz Heater Literature Sheet.
Patent History
Patent number: D271132
Type: Grant
Filed: Apr 8, 1981
Date of Patent: Oct 25, 1983
Assignee: National Presto Industries, Inc. (Eau Claire, WI)
Inventors: Melvin H. Boldt (Glenview, IL), Thurber H. Morrison (Evanston, IL), Robert W. Becker (Naperville, IL), Robert S. Huff (Oak Park, IL)
Primary Examiner: Catherine E. Kemper
Law Firm: Merchant, Gould, Smith, Edell, Welter & Schmidt
Application Number: 6/252,190
Classifications
Current U.S. Class: D23/123
International Classification: D2303;