Filter flow indicating device
Description
FIG. 1 is a top plan view of a filter flow indicating device showing my new design;
FIG. 2 is a front elevational view of FIG. 1 the rear being substantially a mirror image thereof;
FIG. 3 is a left side end elevational view thereof;
FIG. 4 is a right side end elevational view thereof.
Referenced Cited
U.S. Patent Documents
Other references
D195226 | May 1963 | Busillo |
D256000 | July 22, 1980 | Moljin |
828108 | August 1906 | Graham |
1631746 | June 1927 | Luckey |
2970561 | February 1961 | Ashwood |
3152475 | October 1964 | Ford |
3585963 | June 1971 | Hiszpansky |
3805611 | April 1974 | Hedland |
4373528 | February 15, 1983 | Harle |
4619139 | October 28, 1986 | Rosaen |
- New Equip. Digest-1/78-p. 46-Flowmeters at center. Hedland Products brochure-1/80, pp. 1-3-Flowmeters.
Patent History
Patent number: D297716
Type: Grant
Filed: Nov 6, 1985
Date of Patent: Sep 20, 1988
Inventor: Lars O. Rosaen (Plymouth, MI)
Primary Examiner: Nelson C. Holtje
Law Firm: Gifford, Groh, VanOphem, Sheridan, Sprinkle and Dolgorukov
Application Number: 6/803,898
Type: Grant
Filed: Nov 6, 1985
Date of Patent: Sep 20, 1988
Inventor: Lars O. Rosaen (Plymouth, MI)
Primary Examiner: Nelson C. Holtje
Law Firm: Gifford, Groh, VanOphem, Sheridan, Sprinkle and Dolgorukov
Application Number: 6/803,898
Classifications
Current U.S. Class:
Volume, Flow Or Rate (D10/96)