Granted Patent
Utility
US 4,156,337 · App. 05/885,961
Pivotally mounted grass catcher for riding mower
Inventor:
Henry T. Knudson
Patented Case
View Patent ↗
Granted: May 29, 1979
Filed: Mar 13, 1978
Inventor
Henry T. Knudson
Assignee (at issue)
Allis-Chalmers Corporation
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.