Granted Patent
Utility
US 3,981,373 · App. 05/580,299
Unitary frame and engine support for snowmobile
Inventor:
Gerald O. Irvine
Patented Case
View Patent ↗
Granted: Sep 21, 1976
Filed: May 23, 1975
Inventor
Gerald O. Irvine
Assignee (at issue)
Scorpion, Inc.
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.