Granted Patent
Utility
US 6,120,404 · App. 09/479,510
Belt tensioner
Inventors:
Roger L. Walworth, Richard Boulanger
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: Jan 7, 2000
Inventors
Roger L. Walworth
Richard Boulanger
Assignee (at issue)
Davis-Standard, 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.