Granted Patent
Utility
US 4,254,960 · App. 06/049,260
Sealing device
Inventor:
Jerry G. Jelinek
Patented Case
View Patent ↗
Granted: Mar 10, 1981
Filed: Jun 18, 1979
Inventor
Jerry G. Jelinek
Assignee (at issue)
Parker-Hannifin 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.