Johan S. H. Stark

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Stockholm, SE

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Patents Grantslast 30 patents

Information Patent Grant
Chord key for musical instruments
- Patent number 4,671,159
- Issue date Jun 9, 1987
- Johan Stark
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Method for preventing collision of two mutually movable bodies and...
- Patent number 4,578,757
- Issue date Mar 25, 1986
- U.S. Philips Corporation
- Johan S. H. Stark
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE