Burk, Robert E. In Court of Customs and Patent Appeals, patent appeal no. 3346, in re Robert E. Burk, treating cracked petroleum distillates; brief for commissioner of patents.
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Burk, Robert E. In Court of Customs and Patent Appeals, patent appeal no. 3346, in re Robert E. Burk, treating cracked petroleum distillates; brief for commissioner of patents.
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Burk, Robert E. In Court of Customs and Patent Appeals, patent appeal no. 3346, in re Robert E. Burk, treating cracked petroleum distillates; brief for commissioner of patents.