Granted Patent
Utility
US 4,190,176 · App. 06/005,790
Sealing cover unit for a container for a semiconductor device
Inventor:
Norman Hascoe
Patented Case
View Patent ↗
Granted: Feb 26, 1980
Filed: Jan 23, 1979
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.