TY - JOUR AB - These details and drawings of patents granted in the United States are taken, by permission of the Department of Commerce, from the ‘Official Gazette of the United States Patent Office’. Printed copies of the full specifications can be obtained, price 25 cents each, from the Commissioner of Patents, Washington, D.C., U.S.A. They are usually available for inspection at the British Patent Office, Southampton Buildings, Chancery Lane, London, W.C.2. VL - 29 IS - 7 SN - 0002-2667 DO - 10.1108/eb032857 UR - https://doi.org/10.1108/eb032857 PY - 1957 Y1 - 1957/01/01 TI - U.S. Patent Specifications T2 - Aircraft Engineering and Aerospace Technology PB - MCB UP Ltd SP - 226 EP - 226 Y2 - 2024/09/19 ER -