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ES301659A1
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A machine to expand metal tubes (Machine-translation by Google Translate, not legally binding)
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ES301660A1
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Plating machine. (Machine-translation by Google Translate, not legally binding)
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ES268562A1
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Method and machine for the manufacture of coated soldier pipes (Machine-translation by Google Translate, not legally binding)
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ES268539A1
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Method and machine for the welding of caºos (Machine-translation by Google Translate, not legally binding)
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ES268429A1
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Method for the continuous manufacture of soldier caºos (Machine-translation by Google Translate, not legally binding)
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ES268364A1
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Method and machine to conform cannes (Machine-translation by Google Translate, not legally binding)
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ES268336A2
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Machine for manufacturing tubes (Machine-translation by Google Translate, not legally binding)
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ES268335A2
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New method and machine for the manufacture of cold pipes (Machine-translation by Google Translate, not legally binding)
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ES268264A2
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New method and machine for manufacturing cold tubes (Machine-translation by Google Translate, not legally binding)
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ES268238A2
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Machine for manufacturing tubes (Machine-translation by Google Translate, not legally binding)
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ES263622A1
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Apparatus for sports exercitation (Machine-translation by Google Translate, not legally binding)
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US3085147A
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Method and machine for cold manufacturing of pipes
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US3085146A
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Machine for manufacturing pipes in situ
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ES249876A1
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Improvements relating to the manufacture of pipes
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ES249875A1
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Improvements relating to the manufacture of pipes
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