Bellis, Arthur E. In Court of Customs and Patent Appeals, patent appeal no. 2563, in re Arthur E. Bellis, method of heat treating metals; brief for commissioner of patents.
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Bellis, Arthur E. In Court of Customs and Patent Appeals, patent appeal no. 2563, in re Arthur E. Bellis, method of heat treating metals; brief for commissioner of patents.
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Bellis, Arthur E. In Court of Customs and Patent Appeals, patent appeal no. 2563, in re Arthur E. Bellis, method of heat treating metals; brief for commissioner of patents.