Granted Patent
Utility
US 5,117,797 · App. 07/778,503
Purge valve
Inventors:
Robert J. Telep, William J. House, III
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Oct 17, 1991
Inventors
Robert J. Telep
William J. House, III
Assignee (at issue)
COLTEC INDUSTRIES, INC.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.