Granted Patent
Utility
US 4,513,302 · App. 06/504,712
Pressure-sensitive or heat-sensitive recording material
Inventor:
Rosalinde Braun
Patented Case
View Patent ↗
Granted: Apr 23, 1985
Filed: Jun 15, 1983
Inventor
Rosalinde Braun
Assignee (at issue)
Ciba-Geigy
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.