Granted Patent
Utility
US 4,381,709 · App. 06/159,158
Printing roller with removable cylinder
Inventor:
Robert Katz
Patented Case
View Patent ↗
Granted: May 3, 1983
Filed: Jun 13, 1980
Inventor
Robert Katz
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.