Haskell, Richard M. In Court of Customs and Patent Appeals, patent appeal no. 5185, in re Richard M. Haskell, method of recovering oil; brief for commissioner of patents.
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Haskell, Richard M. In Court of Customs and Patent Appeals, patent appeal no. 5185, in re Richard M. Haskell, method of recovering oil; brief for commissioner of patents.
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Haskell, Richard M. In Court of Customs and Patent Appeals, patent appeal no. 5185, in re Richard M. Haskell, method of recovering oil; brief for commissioner of patents.