Granted Patent
Utility
US 5,781,399 · App. 08/692,374
Energy efficient control circuit for solenoid actuated locking device
Inventors:
William P. Lanigan, James B. Davis
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Aug 5, 1996
Inventors
William P. Lanigan
James B. Davis
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.