Granted Patent
Utility
US 6,454,031 · App. 09/767,869
Vehicle transmission apparatus
Inventor:
Zbigniew Szymkowiak
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Jan 24, 2001
Inventor
Zbigniew Szymkowiak
Assignee (at issue)
Ontario Drive & Gear 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.