Manometer

- World-Wide Plastics, Inc.
Description

FIG. 1 is a front and top left perspective view of manometer showing my new design;

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof.

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D223776 June 1972 Gruett
1111455 September 1914 Hamilton
2437861 March 1948 Rohr
2664645 January 1954 Qualman
2707396 May 1955 Dupure
3150524 September 1964 Arens
3730168 May 1973 McWhorter
3807389 April 1974 Miller
3886796 June 1975 Gruett
Patent History
Patent number: D292891
Type: Grant
Filed: Mar 26, 1985
Date of Patent: Nov 24, 1987
Assignee: World-Wide Plastics, Inc. (Trevose, PA)
Inventors: Donald Frick (Trevose, PA), George R. Jackson (Doylestown, PA)
Primary Examiner: Nelson C. Holtje
Attorney: Louis Weinstein
Application Number: 6/716,364
Classifications