Heijkenskjold, Gustaf O. W. In Court of Customs and Patent Appeals, patent appeal no. 2994, in re Gustaf Olof Wolfgang Heijkenskjold, improvements in bathing plants; brief for commissioner of patents.
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Heijkenskjold, Gustaf O. W. In Court of Customs and Patent Appeals, patent appeal no. 2994, in re Gustaf Olof Wolfgang Heijkenskjold, improvements in bathing plants; brief for commissioner of patents.
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Heijkenskjold, Gustaf O. W. In Court of Customs and Patent Appeals, patent appeal no. 2994, in re Gustaf Olof Wolfgang Heijkenskjold, improvements in bathing plants; brief for commissioner of patents.