Granted Patent
Utility
US 4,767,292 · App. 07/075,445
Electrical commutation apparatus
Inventor:
Mark Kinder
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Jul 20, 1987
Inventor
Mark Kinder
Assignee (at issue)
TRW Limited
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.