Letters patent from England No. 294319 for an invention for an improved undercarriage for aircraft Unit ID: 5
Letters Patent from France No. 653688 for an invention of an improved undercarriage for aircraft Unit ID: 3
Letters patent from South Africa 367/1928 for an invention for an improved undercarriage for aircraft Unit ID: 6
Papers of Bert Hinkler, 1927-1929 Unit ID: MS 347 Repository: National Library of Australia Date: 1927/1929 Creator: Bert Hinkler Physical Description: 0.18 metres and (1 archives box)