Vissering, Harry. In Court of Appeals of District of Columbia, Oct. term, 1925, patent appeal no. 1797, in re Harry Vissering, worm and rack operating mechanism for valves; brief for commissioner of patents.
Publication Title:
Vissering, Harry. In Court of Appeals of District of Columbia, Oct. term, 1925, patent appeal no. 1797, in re Harry Vissering, worm and rack operating mechanism for valves; brief for commissioner of patents.
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Vissering, Harry. In Court of Appeals of District of Columbia, Oct. term, 1925, patent appeal no. 1797, in re Harry Vissering, worm and rack operating mechanism for valves; brief for commissioner of patents.