Granted Patent
Utility
US 4,590,670 · App. 06/635,216
Method of making an electrical switch
Inventor:
Frank Payne
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Jul 27, 1984
Inventor
Frank Payne
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.