Granted Patent
Utility
US 4,423,959 · App. 06/473,042
Positioning apparatus
Inventors:
Kiwao Nakazawa, Kyoichi Suwa, Shoichiro Yoshida
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Mar 7, 1983
Inventors
Kiwao Nakazawa
Kyoichi Suwa
Shoichiro Yoshida
Assignee (at issue)
Nippon Kogaku K.K.
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.