Granted Patent
Utility
US 4,450,331 · App. 06/502,368
Key switch assembly having momentary closed interval
Inventor:
Kazutoyo Fukukura
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Jun 8, 1983
Inventor
Kazutoyo Fukukura
Assignee (at issue)
AMP LLC
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.