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US2178528A
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Process of producing rubber balls
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ES136920A1
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A procedure for making rubber balls.
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ES130953A1
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A procedure for the production of hoses with external reliefs.
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ES128691A1
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A process for the manufacture of screw closures for bottles.
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ES128505A1
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A procedure for the manufacture of elastic rubber tubes with external reliefs.
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ES118784A1
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Rubber carpet manufacturing process.
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ES110096A1
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A rubber carpet manufacturing process.
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