Granted Patent
Utility
US 4,600,679 · App. 06/613,823
Water-developable, negative-working, diazo lithographic printing plate with oleophilic ester overlayer
Inventors:
Alan R. Browne, Charles R. Morgan
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: May 25, 1984
Inventors
Alan R. Browne
Charles R. Morgan
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.