Manometer
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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
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