Rowell, Lewis D. In Court of Appeals of District of Columbia, Oct. term, 1918, patent appeal no. 1185, in re Lewis D. Rowell, improvement in lifting magnet; brief for commissioner of patents.
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Rowell, Lewis D. In Court of Appeals of District of Columbia, Oct. term, 1918, patent appeal no. 1185, in re Lewis D. Rowell, improvement in lifting magnet; brief for commissioner of patents.
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Rowell, Lewis D. In Court of Appeals of District of Columbia, Oct. term, 1918, patent appeal no. 1185, in re Lewis D. Rowell, improvement in lifting magnet; brief for commissioner of patents.