Granted Patent
Utility
US 4,995,795 · App. 07/413,596
Noise reducing wear shield for piston face
Inventors:
Thomas R. Hetzel, Roy J. Rozek
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Sep 28, 1989
Inventors
Thomas R. Hetzel
Roy J. Rozek
Assignee (at issue)
THOMAS INDUSTRIES, 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.