Granted Patent
Utility
US 4,378,622 · App. 06/293,764
Method of making compressible printing roller
Inventors:
Melvin D. Pinkston, Wayne W. Easley
Patented Case
View Patent ↗
Granted: Apr 5, 1983
Filed: Aug 17, 1981
Inventors
Melvin D. Pinkston
Wayne W. Easley
Assignee (at issue)
DayCo Holdings, LP
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.