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Ralph Winstanley
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Wath-upon-Dearne, Rotherham S63 7LR, GB
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last 30 patents
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Patent Grant
Dual purpose grinding machine
Patent number
5,012,617
Issue date
May 7, 1991
Ralph Winstanley
B24 - GRINDING POLISHING
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Patent Grant
Grinding machine for mowing machine cylinder blades
Patent number
4,621,456
Issue date
Nov 11, 1986
Ralph Winstanley
B24 - GRINDING POLISHING