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process for the production of kautschukfaeden by watermelons of kernfaeden made of natural or synthetic fibres with rubber and enhance or destroy the kernfaeden within the kautschukfaeden thus obtained
process for the production of kautschukfaeden by watermelons of kernfaeden made of natural or synthetic fibres with rubber and enhance or destroy the kernfaeden within the kautschukfaeden thus obtained