Granted Patent
Utility
US 4,303,721 · App. 06/059,343
Closed cell foam printing blanket
Inventor:
Jorge M. Rodriguez
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: Jul 20, 1979
Inventor
Jorge M. Rodriguez
Assignee (at issue)
W. R. Grace & Co.
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.