Lilienfeld, Leon. In Court of Customs and Patent Appeals, patent appeal no. 3201, in re Leon Lilienfeld, alkali cellulose and process of making same; brief for commissioner of patents.
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Lilienfeld, Leon. In Court of Customs and Patent Appeals, patent appeal no. 3201, in re Leon Lilienfeld, alkali cellulose and process of making same; brief for commissioner of patents.
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Lilienfeld, Leon. In Court of Customs and Patent Appeals, patent appeal no. 3201, in re Leon Lilienfeld, alkali cellulose and process of making same; brief for commissioner of patents.