In Court of Customs and Patent Appeals, patent appeal no. 5732, in re Clark C. Heritage, production of hot-bonded fiber felts; brief for commissioner of patents.
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In Court of Customs and Patent Appeals, patent appeal no. 5732, in re Clark C. Heritage, production of hot-bonded fiber felts; brief for commissioner of patents.
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In Court of Customs and Patent Appeals, patent appeal no. 5732, in re Clark C. Heritage, production of hot-bonded fiber felts; brief for commissioner of patents.