Wilson, Elihu C. In Court of Appeals of District of Columbia, Apr. term, 1919, patent appeal no. 1230, in re Elihu C. Wilson, improvement in well elevators; brief for commissioner of patents.
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Wilson, Elihu C. In Court of Appeals of District of Columbia, Apr. term, 1919, patent appeal no. 1230, in re Elihu C. Wilson, improvement in well elevators; brief for commissioner of patents.
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Wilson, Elihu C. In Court of Appeals of District of Columbia, Apr. term, 1919, patent appeal no. 1230, in re Elihu C. Wilson, improvement in well elevators; brief for commissioner of patents.