Granted Patent
Utility
US 4,046,975 · App. 05/615,230
Keyboard switch assembly having internal gas passages preformed in spacer member
Inventor:
Richard E. Seeger
Patented Case
View Patent ↗
Granted: Sep 6, 1977
Filed: Sep 22, 1975
Inventor
Richard E. Seeger
Assignee (at issue)
Chomerics, Inc.
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.