Granted Patent
Utility
US 4,613,962 · App. 06/539,469
Tracking device with linear motor
Inventors:
Yukio Inoue, Katsumi Mizunoe
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Oct 6, 1983
Inventors
Yukio Inoue
Katsumi Mizunoe
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.