Granted Patent
Utility
US 4,483,514 · App. 06/366,633
Gate member for resilient-seated gate valve
Inventor:
Paul Kennedy
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Apr 8, 1982
Inventor
Paul Kennedy
Assignee (at issue)
International Telephone and Telegraph Corporation
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.