Rosenberg, Heyman. In Court of Appeals of District of Columbia, Oct. term, 1922, patent appeal no. 1557, in re Heyman Rosenberg, improvement in screws; brief for commissioner of patents.
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Rosenberg, Heyman. In Court of Appeals of District of Columbia, Oct. term, 1922, patent appeal no. 1557, in re Heyman Rosenberg, improvement in screws; brief for commissioner of patents.
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Rosenberg, Heyman. In Court of Appeals of District of Columbia, Oct. term, 1922, patent appeal no. 1557, in re Heyman Rosenberg, improvement in screws; brief for commissioner of patents.