871. Fischer, Albert C. In Court of Customs and Patent Appeals, patent appeal no. 2629, in re Albert C. Fischer, roofing shingles, slates and tiles, and their method of application in combination with prepared foundation sheets, marked, blank, and off set; brief for commissioner of patents. Bookmark Corporate/Agency Authors: Patent Office and Commerce Department Publisher: Patent Office Date: [1929.] SuDoc number: C 21.10:F 522/2