Longitudinal system of Tankers. A CONTINUOUS LONGITUDINAL SYSTEM OF FRAMING FOR OIL-TANK SHIPS. 静止画資料 1926 平賀譲デジタルアーカイブ | 柏図書館
UNITED STATES PATENT OFFICE. 1,603,098 ROBERT LEE WRIGHT,OF LOS ANGELES,CALIFORNIA;WILLIE CROCKETT WRIGHT ADMINISTRATRIX OF SAID ROBERT LEE WRIGHT,DECEASED. GUN-CARRYING TORPEDO. 静止画資料 1926 平賀譲デジタルアーカイブ | 柏図書館