Granted Patent
Utility
US 4,334,550 · App. 05/639,871
Sealing means for sliding gate valve
Inventors:
Peter J. Connor, Donald K. Hagar
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Dec 10, 1975
Inventors
Peter J. Connor
Donald K. Hagar
Assignee (at issue)
Mosser 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.