Roland Siefert

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Bad Durrheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Vehicle operation recorder
- Patent number 4,862,191
- Issue date Aug 29, 1989
- Moto Meter AG
- Roland Siefert
- G07 - CHECKING-DEVICES
Information Patent Grant
Clock, in particular desk or wall clock, with one or more analog ti...
- Patent number 4,720,820
- Issue date Jan 19, 1988
- Roland Siefert
- G04 - HOROLOGY
Information Patent Grant
Tachograph cover door assembly
- Patent number 4,507,963
- Issue date Apr 2, 1985
- Kienzle Apparate GmbH
- Bernd Donner
- G07 - CHECKING-DEVICES
Information Patent Grant
Alarm clock case shut-off device
- Patent number 4,282,596
- Issue date Aug 4, 1981
- Kienzle Uhrenfabriken GmbH
- Roland Siefert
- G04 - HOROLOGY
Information Patent Grant
Autonomous pendulum mechanism for clockworks
- Patent number 4,228,533
- Issue date Oct 14, 1980
- Kienzle Uhrenfabriken GmbH
- Roland Siefert
- G04 - HOROLOGY