Granted Patent
Utility
US 3,999,918 · App. 05/581,455
Apparatus for making a printing plate from a porous substrate
Inventor:
Robert M. Landsman
Patented Case
View Patent ↗
Granted: Dec 28, 1976
Filed: May 28, 1975
Inventor
Robert M. Landsman
Assignee (at issue)
LogEtronics, 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.