Granted Patent
Utility
US 4,589,773 · App. 06/333,295
Position detecting system
Inventors:
Satoshi Ido, Minpei Fujinami, Yasuo Kato, Yoshio Sakitani, Susumu Ozasa
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Dec 22, 1981
Inventors
Satoshi Ido
Minpei Fujinami
Yasuo Kato
Yoshio Sakitani
Susumu Ozasa
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
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.