Granted Patent
Utility
US 5,073,786 · App. 07/595,519
Thermal head breakage detecting circuit
Inventors:
Fumihiro Shimada, Hisashi Uemura
Patented Case
View Patent ↗
Granted: Dec 17, 1991
Filed: Oct 11, 1990
Inventors
Fumihiro Shimada
Hisashi Uemura
Assignee (at issue)
Kanzaki Paper Manufacturing Co., 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.