Granted Patent
Utility
US 4,614,992 · App. 06/768,736
Actuator driver with open-circuit and stray ground protection
Inventor:
Richard K. Heiser
Patented Case
View Patent ↗
Granted: Sep 30, 1986
Filed: Aug 23, 1985
Inventor
Richard K. Heiser
Assignee (at issue)
Sundstrand 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.