Kauffman, Walter L., 2d. In Court of Customs and Patent Appeals, patent appeal no. 5062, in re Walter L. Kauffman, II, wringers; brief for commissioner of patents.
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Kauffman, Walter L., 2d. In Court of Customs and Patent Appeals, patent appeal no. 5062, in re Walter L. Kauffman, II, wringers; brief for commissioner of patents.
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Kauffman, Walter L., 2d. In Court of Customs and Patent Appeals, patent appeal no. 5062, in re Walter L. Kauffman, II, wringers; brief for commissioner of patents.