Pfister, Arnold. In Court of Customs and Patent Appeals, patent appeal no. 3482, in re Arnold Pfister, printing thickeners; brief for commissioner of patents.
Publication Title:
Pfister, Arnold. In Court of Customs and Patent Appeals, patent appeal no. 3482, in re Arnold Pfister, printing thickeners; brief for commissioner of patents.
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Pfister, Arnold. In Court of Customs and Patent Appeals, patent appeal no. 3482, in re Arnold Pfister, printing thickeners; brief for commissioner of patents.