Granted Patent
Utility
US 4,734,355 · App. 06/941,885
Sensitivity of processless recording media
Inventors:
David F. Lewis, Mark L. Moskowitz, Steward E. Purdy
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: Dec 15, 1986
Inventors
David F. Lewis
Mark L. Moskowitz
Steward E. Purdy
Assignee (at issue)
GAF Corporation
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.