Johannes A. Frankena

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Drachten, NL

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Patents Grantslast 30 patents

Information Patent Grant
Irradiation device
- Patent number 4,950,903
- Issue date Aug 21, 1990
- Johannes A. Frankena
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Irradiation device
- Patent number 4,866,284
- Issue date Sep 12, 1989
- U.S. Philips Corporation
- Johannes A. Frankena
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Irradiation device
- Patent number 4,785,190
- Issue date Nov 15, 1988
- U.S. Philips Corporation
- Johannes A. Frankena
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE