Willi Ahr

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Birkenfeld, DE

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Patents Grantslast 30 patents

Information Patent Grant
T-attachment for the detachable fastening of dental prostheses
- Patent number 4,767,329
- Issue date Aug 30, 1988
- Degussa Aktiengesellschaft
- Harry Schiwiora
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Precision attachment for securing dental prostheses
- Patent number 4,632,659
- Issue date Dec 30, 1986
- Degussa Aktiengesellschaft
- Harry Schiwiora
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE