Lilienfeld, Leon. In Court of Appeals of District of Columbia, Apr. term, 1924, patent appeal no. 1701, in re Leon Lilienfeld, improvements in plastic compositions; brief for commissioner of patents.
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Lilienfeld, Leon. In Court of Appeals of District of Columbia, Apr. term, 1924, patent appeal no. 1701, in re Leon Lilienfeld, improvements in plastic compositions; brief for commissioner of patents.
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Lilienfeld, Leon. In Court of Appeals of District of Columbia, Apr. term, 1924, patent appeal no. 1701, in re Leon Lilienfeld, improvements in plastic compositions; brief for commissioner of patents.