Granted Patent
Utility
US 4,093,031 · App. 05/809,901
Pendulum type hoe
Inventor:
William E. Portz
Patented Case
View Patent ↗
Granted: Jun 6, 1978
Filed: Jun 24, 1977
Inventor
William E. Portz
Assignee (at issue)
True Temper 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.