Granted Patent
Utility
US 4,604,793 · App. 06/648,585
Method of making a control device
Inventor:
Charles J. Everett
Patented Case
View Patent ↗
Granted: Aug 12, 1986
Filed: Sep 10, 1984
Inventor
Charles J. Everett
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.