Granted Patent
Utility
US 4,875,278 · App. 07/145,053
Method of making an electrical switch
Inventor:
Harold A. McIntosh
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Jan 19, 1988
Inventor
Harold A. McIntosh
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.