Granted Patent
Utility
US 4,578,285 · App. 06/661,119
Ink jet printing substrate
Inventor:
Michael S. Viola
Patented Case
View Patent ↗
Granted: Mar 25, 1986
Filed: Oct 15, 1984
Inventor
Michael S. Viola
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.