Granted Patent
Utility
US 4,607,138 · App. 06/686,658
Method of controlling a printing apparatus
Inventors:
Masamitu Suzuki, Yoshito Hagiwara
Patented Case
View Patent ↗
Granted: Aug 19, 1986
Filed: Dec 27, 1984
Inventors
Masamitu Suzuki
Yoshito Hagiwara
Assignee (at issue)
HITACHI, LTD.
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.