Christopher, Arthur B. In Court of Customs and Patent Appeals, patent appeal no. 5189, in re Arthur B. Christopher process and apparatus for making asbestos-cement pipe; brief for commissioner of patents.
Publication Title:
Christopher, Arthur B. In Court of Customs and Patent Appeals, patent appeal no. 5189, in re Arthur B. Christopher process and apparatus for making asbestos-cement pipe; brief for commissioner of patents.
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Christopher, Arthur B. In Court of Customs and Patent Appeals, patent appeal no. 5189, in re Arthur B. Christopher process and apparatus for making asbestos-cement pipe; brief for commissioner of patents.