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ES148293A1
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Automatic machine for the application of welding on metal boxes or other objects
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ES140567A1
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Improved mechanism for applying welding to metal objects.
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ES137352A1
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Mechanism of compression and retention of the pieces that are worked in the mechanical welding or by hand.
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ES136656A1
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Machine for applying liquid solder to the edges of metal sheets and other materials.
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ES122926A1
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Machine for the automatic formation and welding of metal box bodies.
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FR468641A
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Compound automatic expansion regulator for refrigeration devices
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