Granted Patent
Utility
US 4,392,843 · App. 06/212,300
Metal belt
Inventor:
Geoffrey N. Smit
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Dec 3, 1980
Inventor
Geoffrey N. Smit
Assignee (at issue)
BorgWarner 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.