Robert L. Johnson

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Edina, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Low friction bearing surfaces and structures particularly for artif...
- Patent number 4,547,910
- Issue date Oct 22, 1985
- Rensselaer Polytechnic Institute
- Jack Roberts
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Low friction bearing surfaces and structures particularly for artif...
- Patent number 4,535,486
- Issue date Aug 20, 1985
- Rensselaer Polytechnic Institute
- Jack Roberts
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE