Foster, Bertram G. In Court of Appeals of District of Columbia, Apr. term, 1924, patent appeal no. 1682, in re Bertram G. Foster, improvement in hoists; brief for commissioner of patents.
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Foster, Bertram G. In Court of Appeals of District of Columbia, Apr. term, 1924, patent appeal no. 1682, in re Bertram G. Foster, improvement in hoists; brief for commissioner of patents.
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Foster, Bertram G. In Court of Appeals of District of Columbia, Apr. term, 1924, patent appeal no. 1682, in re Bertram G. Foster, improvement in hoists; brief for commissioner of patents.