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DE434612C
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Transport trolley for coal powder and similar substances
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Means for ascertaining leakage of pistons of double-acting internal-combustion engines
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Means for ascertaining the leakage past the piston of a doubleacting internal combustion engine
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Improvements in and connected with winches
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Winch
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Operating method for double-acting internal combustion engines
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Improvements in and relating to double acting internal combustion engines
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Improvements in and relating to articulated piping
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Improvements in steam turbines
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