Roland Siefert

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Bad Durrheim, DT

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Patents Grantslast 30 patents

Information Patent Grant
Pendulum device for battery-powered clockwork mechanism
- Patent number 4,043,118
- Issue date Aug 23, 1977
- Kienzle Uhrenfabriken GmbH
- Albrecht Haag
- G04 - HOROLOGY
Information Patent Grant
Mechanical improvement on an electric alarm clock
- Patent number 4,004,408
- Issue date Jan 25, 1977
- Kienzle Uhrenfabriken GmbH
- Roland Siefert
- G04 - HOROLOGY