In Court of Customs and Patent Appeals, patent appeal no. 5599, in re Elisha W. Hall, rotary cylinder abrading tool; brief for commissioner of patents.
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In Court of Customs and Patent Appeals, patent appeal no. 5599, in re Elisha W. Hall, rotary cylinder abrading tool; brief for commissioner of patents.
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In Court of Customs and Patent Appeals, patent appeal no. 5599, in re Elisha W. Hall, rotary cylinder abrading tool; brief for commissioner of patents.