Granted Patent
Utility
US 4,634,407 · App. 06/765,011
Self-tensioning belt tightener
Inventor:
Glen D. Holtz
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Aug 12, 1985
Inventor
Glen D. Holtz
Assignee (at issue)
Federal-Mogul LLC
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.