Granted Patent
Utility
US 4,242,546 · App. 05/957,892
Electrical push-button switch
Inventor:
Oscar Alonso
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Nov 6, 1978
Inventor
Oscar Alonso
Assignee (at issue)
International Telephone and Telegraph Corporation
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.