Original Swiss Patents

Inventions by Dr. Armin H. Frei
Quartz Wristwatch Project
Centre Electronique Horloger CEH
Neuchâtel Switzerland (1965-1967)

Device with bending Oscillators for suspending X-Y-Bending-Quartz-Crystals in Timekeeping Devices (Miniaturisation of a Quartz Device)
Original Swiss Patent No. 461 382, 1966/1968
Inventor: Armin H. Frei

Capacitor with stepwise variable Capacitance in a Timekeeping Device
Original Swiss Patent No. 503 312, 1967/1971
Inventor: Armin H. Frei

Watch with electric Display Device and electric Timepiece
Original Interpretative Document
Swiss Patent Office No. 11746/66, 1966/1969
Inventor: Armin H. Frei
Original Swiss Patent No. 520 970, 1966/1972
Inventor: Armin H. Frei

Method of forming a soldered Joint
Original Swiss Patent No. 444 012, 1966/1967
Inventor: Armin H. Frei et al.

All Rights Reserved, Copyright © 2019-
Dr. Armin H. Frei Heritage Estate, Zurich Switzerland