Keeling, William O. In Court of Customs and Patent Appeals, patent appeal no. 4858, in re William O. Keeling, vapor phase cracking process; brief for commissioner of patents.
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Keeling, William O. In Court of Customs and Patent Appeals, patent appeal no. 4858, in re William O. Keeling, vapor phase cracking process; brief for commissioner of patents.
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Keeling, William O. In Court of Customs and Patent Appeals, patent appeal no. 4858, in re William O. Keeling, vapor phase cracking process; brief for commissioner of patents.