Granted Patent
Utility
US 4,655,598 · App. 06/799,262
Position detection method and apparatus
Inventors:
Seiro Murakami, Toshio Matsuura, Yuji Imai, Kazuya Ohta
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Nov 18, 1985
Inventors
Seiro Murakami
Toshio Matsuura
Yuji Imai
Kazuya Ohta
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.