The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2004
Filed:
Nov. 13, 2000
Applicant:
Inventor:
Howard M. Gammon, Sea Gert, NJ (US);
Assignee:
Gammon Technical Products, Inc., Manasquan, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 7/16 ;
U.S. Cl.
CPC ...
G01L 7/16 ;
Abstract
A pressure gauge having a pressure operated piston for measuring the difference in pressure between two pressure signals including an automatically operative pressure relief valve and a manually operable three-way valve to provide a venting function useful for inspecting the operation of the pressure operated piston of the pressure gauge.