Granted Patent
Utility
US 4,475,737 · App. 06/378,044
Slip spline sealing plug
Inventors:
Thomas Cook, Jay W. Thorngurgh
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: May 14, 1982
Inventors
Thomas Cook
Jay W. Thorngurgh
Assignee (at issue)
DANA LIMITED
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.