Granted Patent
Utility
US 4,157,936 · App. 05/879,324
Method of rendering an ink strippable
Inventor:
John R. Piazza
Patented Case
View Patent ↗
Granted: Jun 12, 1979
Filed: Feb 21, 1978
Inventor
John R. Piazza
Assignee (at issue)
Western Electric Company, 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.