Granted Patent
Utility
US 6,305,608 · App. 09/141,429
Pen type code reader
Inventors:
Yoshiyuki Nada, Chikayoshi Meguro
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Aug 27, 1998
Inventors
Yoshiyuki Nada
Chikayoshi Meguro
Assignee (at issue)
Olympus Optical Co., 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.