Nelson, Oscar T. In Court of Customs and Patent Appeals, patent appeal no. 2548, in re Oscar T. Nelson, liquid-level gauge; brief for commissioner of patents.
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Nelson, Oscar T. In Court of Customs and Patent Appeals, patent appeal no. 2548, in re Oscar T. Nelson, liquid-level gauge; brief for commissioner of patents.
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Nelson, Oscar T. In Court of Customs and Patent Appeals, patent appeal no. 2548, in re Oscar T. Nelson, liquid-level gauge; brief for commissioner of patents.