Granted Patent
Utility
US 4,435,949 · App. 06/397,102
Mulching adapter for rotary lawn mower
Inventor:
Richard A. Heismann
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Jul 12, 1982
Inventor
Richard A. Heismann
Assignee (at issue)
Outboard Marine 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.