John G. Schofield

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Dodworth Barnsley, GB

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Patents Grantslast 30 patents

Information Patent Grant
Cores for tennis balls
- Patent number 4,306,719
- Issue date Dec 22, 1981
- Dunlop Limited
- Robert C. Haines
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Play ball
- Patent number 4,305,583
- Issue date Dec 15, 1981
- Dunlop Limited
- Ravi Tandon
- A63 - SPORTS GAMES AMUSEMENTS