Rudi Dueringer

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Wuppertal, DE

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Patents Grantslast 30 patents

Information Patent Grant
Permutation lock for containers such as suitcases
- Patent number 4,771,617
- Issue date Sep 20, 1988
- S. Franzen Sohne (GmbH & Co.)
- Rudi Dueringer
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Closure mechanism for suitcases or the like
- Patent number 4,679,833
- Issue date Jul 14, 1987
- S.Franzen Sohne GmbH & Co.
- Rudi Dueringer
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Permutation lock having rotary dials and a dial locking spring
- Patent number 4,644,767
- Issue date Feb 24, 1987
- S.Franzen Sohne GmbH & Co.
- Rudi Dueringer
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES