Armbruster, William J. In Court of Customs and Patent Appeals, patent appeal no. 2529, in re William J. Armbruster, method of wall construction; brief for commissioner of patents.
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Armbruster, William J. In Court of Customs and Patent Appeals, patent appeal no. 2529, in re William J. Armbruster, method of wall construction; brief for commissioner of patents.
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Armbruster, William J. In Court of Customs and Patent Appeals, patent appeal no. 2529, in re William J. Armbruster, method of wall construction; brief for commissioner of patents.