Ludwick, Harlan M. In Court of Appeals of District of Columbia, Oct. term, 1924, patent appeal no. 1664, in re Harlan M. Ludwick, lubricators; brief for commissioner of patents.
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Ludwick, Harlan M. In Court of Appeals of District of Columbia, Oct. term, 1924, patent appeal no. 1664, in re Harlan M. Ludwick, lubricators; brief for commissioner of patents.
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Ludwick, Harlan M. In Court of Appeals of District of Columbia, Oct. term, 1924, patent appeal no. 1664, in re Harlan M. Ludwick, lubricators; brief for commissioner of patents.