Granted Patent
Utility
US 4,492,838 · App. 06/469,331
Key switch having an actuator integral with the return spring
Inventor:
Kazutoyo Fukukura
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Feb 24, 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.