Welter, Herman C. In Court of Customs and Patent Appeals, patent appeal no. 4472, in re Herman C. Welter, printing machines; brief for commissioner of patents.
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Welter, Herman C. In Court of Customs and Patent Appeals, patent appeal no. 4472, in re Herman C. Welter, printing machines; brief for commissioner of patents.
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Welter, Herman C. In Court of Customs and Patent Appeals, patent appeal no. 4472, in re Herman C. Welter, printing machines; brief for commissioner of patents.