Granted Patent
Utility
US 4,725,802 · App. 07/015,736
Solenoid actuator with stationary armature extension
Inventors:
Terence L. Johnson, James E. Greame
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Feb 17, 1987
Inventors
Terence L. Johnson
James E. Greame
Assignee (at issue)
Automatic Switch Company
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.