Granted Patent
Utility
US 4,324,958 · App. 06/179,189
Tactile switch device
Inventor:
Robert L. Valleau
Patented Case
View Patent ↗
Granted: Apr 13, 1982
Filed: Aug 18, 1980
Inventor
Robert L. Valleau
Assignee (at issue)
Switchcraft, 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.