James Stewart Johnston

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Bognor Regis, EN

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Patents Grantslast 30 patents

Information Patent Grant
Electric circuits
- Patent number 4,080,821
- Issue date Mar 28, 1978
- Rosemount Engineering Company Limited
- James Stewart Johnston
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for determining the freezing point of a liquid
- Patent number 3,986,385
- Issue date Oct 19, 1976
- Rosemount Engineering Company Limited
- James Stewart Johnston
- G01 - MEASURING TESTING
Information Patent Grant
Analogue computer for solving polynomial equations
- Patent number 3,953,721
- Issue date Apr 27, 1976
- Rosemount Engineering Company Limited
- James Stewart Johnston
- G06 - COMPUTING CALCULATING COUNTING