Granted Patent
Utility
US 5,334,573 · App. 07/801,460
Sheet material for thermal transfer imaging
Inventor:
Howard G. Schild
Patented Case
View Patent ↗
Granted: Aug 2, 1994
Filed: Dec 2, 1991
Inventor
Howard G. Schild
Assignee (at issue)
Polaroid 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.