John K. Humphreys

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Whitefield, GB

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Patents Grantslast 30 patents

Information Patent Grant
Electric storage battery
- Patent number D285191
- Issue date Aug 19, 1986
- Chloride Group Public Limited Company
- John K. Humphreys
- D13 - Equipment for production, distribution, or transformation of energy
Information Patent Grant
Electric storage batteries
- Patent number 4,579,790
- Issue date Apr 1, 1986
- Chloride Group Public Limited Company
- John K. Humphreys
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electric storage batteries
- Patent number 4,562,128
- Issue date Dec 31, 1985
- Chloride Group Public Limited Company
- John K. Humphreys
- H01 - BASIC ELECTRIC ELEMENTS