Granted Patent
Utility
US 4,071,745 · App. 05/774,393
Programmable time varying control system and method
Inventor:
B. C. Hall
Patented Case
View Patent ↗
Granted: Jan 31, 1978
Filed: Mar 4, 1977
Inventor
B. C. Hall
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.