Granted Patent
Utility
US 4,493,622 · App. 06/472,858
Variable displacement motor
Inventor:
Laurence L. Miller
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: Mar 7, 1983
Inventor
Laurence L. Miller
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.