CC

Christian Cognasse

HF Horlogerie Photographique Francaise: 2 patents #5 of 10Top 50%
📍 Bonneville, FR: #47 of 142 inventorsTop 35%
Overall (All Time): #2,325,184 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4947075 Piezoelectric insert with side electric connection clips Bernard Maury, Jean-Claude Walter, Peter Graham 1990-08-07
4944017 Electroacoustic insert with added coil Peter Graham, Bernard Maury, Jean-Claude Walter 1990-07-24