Granted Patent
Utility
US 4,445,785 · App. 06/397,638
Electronic time setting for a quartz analog watch
Inventors:
Jean P. Chambon, Jean-Francois Dufay, Paul Grand Chavin, Georges J. Perrin, Louis Vernay
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Jul 12, 1982
Inventors
Jean P. Chambon
Jean-Francois Dufay
Paul Grand Chavin
Georges J. Perrin
Louis Vernay
Assignee (at issue)
William C. Crutcher
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.