Granted Patent
Utility
US 4,200,910 · App. 05/873,093
Programmable time varying control system and method
Inventor:
Burness C. Hall
Patented Case
View Patent ↗
Granted: Apr 29, 1980
Filed: Jan 30, 1978
Inventor
Burness 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.