In Court of Appeals of District of Columbia, Oct. term, 1913, patent appeal no. 891, in re William F. Cooper, improvements in tracker boxes for mechanical musical instruments; brief for commissioner of patents.
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In Court of Appeals of District of Columbia, Oct. term, 1913, patent appeal no. 891, in re William F. Cooper, improvements in tracker boxes for mechanical musical instruments; brief for commissioner of patents.
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In Court of Appeals of District of Columbia, Oct. term, 1913, patent appeal no. 891, in re William F. Cooper, improvements in tracker boxes for mechanical musical instruments; brief for commissioner of patents.