Granted Patent
Utility
US 4,173,111 · App. 05/825,531
Vented grass-catcher cover
Inventor:
James F. Peterson
Patented Case
View Patent ↗
Granted: Nov 6, 1979
Filed: Aug 18, 1977
Inventor
James F. Peterson
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.