摘要：

UNITED STATES PATENT OFFICE 2,072,303 ARTIFICIAL THREADS, BANDS, TUBES, AND THE LIKE FOR SURGICAL AND OTHER PURPOSES Willy O. Herrmann, Munich, Fritz Hammer, Bezirk Kassel, Hessen, and Wolfram Haehnel, Munich, Germany, assignors, by mesne assignments, to Chemische Forschungsgesellschaft m....

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