2014
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Invention
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Roll change apparatus. A rolling machine has pairs of rolls in a horizontal line of roll pair loc... |
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Invention
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Fill valve apparatus. A first valve member has an axis and a first seat surface with a tapered co... |
1992
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P/S
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machines for forming metallic welded tubes for use as casings for drill rigs, line pipe, pilings,... |
1965
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P/S
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ELECTRICALLY OPERATED TUBE FORMING AND WELDING MACHINES USING RESISTANCE WELDING FOR SEAM WELDINGS |
1956
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P/S
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ELECTRICALLY OPERATED TUBE FORMING AND WELDING MACHINES USING RESISTANCE WELDING FOR THE SEAM WEL... |
1955
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P/S
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[ SWAGING MACHINES, ] CUT-OFF MACHINES, AND MACHINES FOR FORMING METALLIC STRIPS INTO TUBE FORM O... |