Granted Patent
Utility
US 4,780,170 · App. 06/845,667
Drum lifting device
Inventor:
Clifford A. Landsness
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Mar 28, 1986
Inventor
Clifford A. Landsness
Assignee (at issue)
The Uniroyal Goodrich Tire Company
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.