Granted Patent
Utility
US 4,280,709 · App. 06/092,406
Piston rubber
Inventors:
George E. Heikes, Jr., Claude L. Henderson
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Nov 8, 1979
Inventors
George E. Heikes, Jr.
Claude L. Henderson
Assignee (at issue)
The Gates Rubber 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.