Dalzell, Charles B. In Court of Customs and Patent Appeals, patent appeal no. 5055, in re Charles B. Dalzell, pipe coupling; brief for commissioner of patents.
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Dalzell, Charles B. In Court of Customs and Patent Appeals, patent appeal no. 5055, in re Charles B. Dalzell, pipe coupling; brief for commissioner of patents.
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Dalzell, Charles B. In Court of Customs and Patent Appeals, patent appeal no. 5055, in re Charles B. Dalzell, pipe coupling; brief for commissioner of patents.