Granted Patent
Utility
US 3,946,190 · App. 05/516,889
Method of fabricating a sealing cover for an hermetically sealed container
Inventor:
Norman Hascoe
Patented Case
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Granted: Mar 23, 1976
Filed: Oct 22, 1974
Inventor
Norman Hascoe
Assignee (at issue)
Semi-Alloys Company
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.