Granted Patent
Utility
US 4,611,897 · App. 06/739,068
Segment indication device
Inventors:
Masahara Hara, Toshio Dobashi
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: May 29, 1985
Inventors
Masahara Hara
Toshio Dobashi
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.