Helmut K. Grell

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Aalen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Body joint endoprosthesis
- Patent number 4,187,559
- Issue date Feb 12, 1980
- Sybron Corporation
- Helmut Grell
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Medical securement element with abrasive grains on thread surface
- Patent number 4,177,524
- Issue date Dec 11, 1979
- Pfaudler-Werke A.G.
- Helmut Grell
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Procedure and apparatus for screwing implants into bones
- Patent number 4,124,026
- Issue date Nov 7, 1978
- Deutsche Gardner-Denver GmbH
- Karl Berner
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE