Granted Patent
Utility
US 4,338,680 · App. 06/038,788
Electronic timepiece
Inventor:
Yasushi Nomura
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: May 14, 1979
Inventor
Yasushi Nomura
Assignee (at issue)
CITIZEN WATCH 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.