Hopkins, Marcus C. In Court of Appeals of District of Columbia, Oct. term, 1928, patent appeal no. 2263, in re Marcus C. Hopkins, design for loud speaker; brief for commissioner of patents.
Publication Title:
Hopkins, Marcus C. In Court of Appeals of District of Columbia, Oct. term, 1928, patent appeal no. 2263, in re Marcus C. Hopkins, design for loud speaker; brief for commissioner of patents.
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Hopkins, Marcus C. In Court of Appeals of District of Columbia, Oct. term, 1928, patent appeal no. 2263, in re Marcus C. Hopkins, design for loud speaker; brief for commissioner of patents.