John R. North

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Durrington, GB

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Patents Grantslast 30 patents

Information Patent Grant
Diagnostic electrode for evaluating circuitry of an analyzer
- Patent number 5,344,544
- Issue date Sep 6, 1994
- Porton Diagnostics, Inc.
- John R. North
- G01 - MEASURING TESTING
Information Patent Grant
Diagnostic electrode
- Patent number D344902
- Issue date Mar 8, 1994
- Porton Diagnostics, Inc.
- John R. North
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Methods of and apparatus for preparing tissue specimens
- Patent number 4,801,553
- Issue date Jan 31, 1989
- Stephen Owen
- G01 - MEASURING TESTING