Granted Patent
Utility
US 4,342,886 · App. 06/074,157
Burner valve control device, an electrical switch unit therefor and methods of making the same
Inventor:
Roy C. Demi
Patented Case
View Patent ↗
Granted: Aug 3, 1982
Filed: Sep 10, 1979
Inventor
Roy C. Demi
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.