Granted Patent
Utility
US 4,672,232 · App. 06/828,446
Microprocessor operated timing controller
Inventor:
Erich Schoen
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Feb 10, 1986
Inventor
Erich Schoen
Assignee (at issue)
Pittway Corporation
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.