Granted Patent
Utility
US 4,915,354 · App. 07/335,796
Cushioned valve seat
Inventors:
Dewey M. Sims, Jr., Lawrence McAuliffe, Jr.
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Apr 10, 1989
Inventors
Dewey M. Sims, Jr.
Lawrence McAuliffe, Jr.
Assignee (at issue)
Colt 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.