Granted Patent
Utility
US 4,291,397 · App. 06/085,168
Manual date advance mechanism for a watch
Inventors:
Paul Wuthrich, Frank P. Mascia
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Oct 15, 1979
Inventors
Paul Wuthrich
Frank P. Mascia
Assignee (at issue)
Timex Corporation
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.