Anna M. Johnston

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Kirkland, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for protecting against cross contamination of...
- Patent number 5,961,326
- Issue date Oct 5, 1999
- SciTech Dental, Inc.
- Simon E. Johnston
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Method and apparatus for protecting against cross contamination of...
- Patent number 5,709,545
- Issue date Jan 20, 1998
- SciTech Dental, Inc.
- Simon E. Johnston
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Method and apparatus for preventing bacteriological contamination b...
- Patent number 5,204,004
- Issue date Apr 20, 1993
- Simon E. Johnston
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE