JD

Jean-Francois Dufay

UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Besançon, FR: #143 of 316 inventorsTop 50%
Overall (All Time): #4,033,600 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4445785 Electronic time setting for a quartz analog watch Jean P. Chambon, Paul Grand Chavin, Georges J. Perrin, Louis Vernay 1984-05-01