Granted Patent
Utility
US 5,351,071 · App. 07/578,459
Thermal printer
Inventors:
Yasuhiro Matsuda, Takashi Yoshida, Isao Shimizu, Katsumi Watanabe, Akira Shimizu, Masashi Yoshida
Patented Case
View Patent ↗
Granted: Sep 27, 1994
Filed: Sep 7, 1990
Inventors
Yasuhiro Matsuda
Takashi Yoshida
Isao Shimizu
Katsumi Watanabe
Akira Shimizu
Masashi Yoshida
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.