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Stanley Walmsley
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Wigan, GB
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last 30 patents
Information
Patent Grant
Swivelling arrangements
Patent number
4,361,219
Issue date
Nov 30, 1982
Coal Industry (Patents) Limited
William R. Aldridge
E21 - EARTH DRILLING MINING
Information
Patent Grant
Laterally adjustable multiple head
Patent number
4,264,051
Issue date
Apr 28, 1981
Coal Industry (Patents) Limited
Stanley Walmsley
E21 - EARTH DRILLING MINING
Information
Patent Grant
Extensible beam arrangement
Patent number
4,251,046
Issue date
Feb 17, 1981
Coal Industry (Patents) Limited
Stanley Walmsley
E21 - EARTH DRILLING MINING