Granted Patent
Utility
US 4,964,322 · App. 07/092,807
Dynamic differential drive
Inventor:
Lee Reiterman
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Sep 3, 1987
Inventor
Lee Reiterman
Assignee (at issue)
GTE Valenite 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.