Nickel, Oscar. In Court of Customs and Patent Appeals, patent appeal no. 2679, in re Oscar Nickel and Reinhold Markwitz, process for manufacture of cement; brief for commissioner of patents.
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Nickel, Oscar. In Court of Customs and Patent Appeals, patent appeal no. 2679, in re Oscar Nickel and Reinhold Markwitz, process for manufacture of cement; brief for commissioner of patents.
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Nickel, Oscar. In Court of Customs and Patent Appeals, patent appeal no. 2679, in re Oscar Nickel and Reinhold Markwitz, process for manufacture of cement; brief for commissioner of patents.