Ferris, Lockwood W. In Court of Customs and Patent Appeals, patent appeal no. 4911, in re Lockwood Whiting Ferris, improvement in separation of potassium and sodium chlorides; brief for commissioner of patents.
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Ferris, Lockwood W. In Court of Customs and Patent Appeals, patent appeal no. 4911, in re Lockwood Whiting Ferris, improvement in separation of potassium and sodium chlorides; brief for commissioner of patents.
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Ferris, Lockwood W. In Court of Customs and Patent Appeals, patent appeal no. 4911, in re Lockwood Whiting Ferris, improvement in separation of potassium and sodium chlorides; brief for commissioner of patents.