David Robert Mason

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Runcorn, EN

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Patents Grantslast 30 patents

Information Patent Grant
Electric discharge lamp
- Patent number 3,984,590
- Issue date Oct 5, 1976
- Thorn Lighting Limited
- David Robert Mason
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Incandescent lamps
- Patent number 3,982,046
- Issue date Sep 21, 1976
- Thorn Lighting Limited
- David Robert Mason
- H01 - BASIC ELECTRIC ELEMENTS