Hanna, William T. In Court of Customs and Patent Appeals, patent appeal no. 4707, in re William Thompson Hanna, improvements in stokers; brief for commissioner of patents.
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Hanna, William T. In Court of Customs and Patent Appeals, patent appeal no. 4707, in re William Thompson Hanna, improvements in stokers; brief for commissioner of patents.
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Hanna, William T. In Court of Customs and Patent Appeals, patent appeal no. 4707, in re William Thompson Hanna, improvements in stokers; brief for commissioner of patents.