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Extraction apparatus
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Patent number 3,930,817
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Issue date Jan 6, 1976
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Newclean Engineering Limited
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Kenneth Thomas Stevenson
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B60 - VEHICLES IN GENERAL
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3226166
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Patent number 3,226,166
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Issue date Dec 28, 1965
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B60 - VEHICLES IN GENERAL
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2842406
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Patent number 2,842,406
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Issue date Jul 8, 1958
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B60 - VEHICLES IN GENERAL
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2780369
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Patent number 2,780,369
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Issue date Feb 5, 1957
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B60 - VEHICLES IN GENERAL