Granted Patent
Utility
US 4,286,272 · App. 06/065,786
Ink jet printer and start up method therefor
Inventor:
Charles J. Schwob
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Aug 13, 1979
Inventor
Charles J. Schwob
Assignee (at issue)
The Mead 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.