Granted Patent
Utility
US 5,673,756 · App. 08/558,261
Turf aerator drive assembly
Inventor:
Larry Classen
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Nov 13, 1995
Inventor
Larry Classen
Assignee (at issue)
Classen Enterprises, Inc.
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.