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DE556904C
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Process for the production of microporous rubber
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DE561568C
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Process for the production of microporous rubber compounds and articles
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DE457745C
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Process for gluing bodies made of dense hard or soft rubber to other objects
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DE439980C
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Process for the production of rubber with a large number of microscopic pores
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DE442619C
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Process for the production of rubber with a large number of microscopic pores
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DE437172C
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Process for the production of rubber with a large number of microscopic pores
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DE425770C
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Process for the production of rubber with a large number of microscopic pores
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DE414975C
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Rubber membrane as a separator for primary and secondary elements, electrolytic cells, filters, etc. like
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DE337943C
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Diaphragm made of paper or the like for primary and secondary elements and electrolytic cells
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DE336813C
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Process for the manufacture of separators for accumulators
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