| 1929 MAE Safety Device For Aeroplanes Patent |
| 1929 WALTER Safety Device For Automobiles Patent |
| 1929 VINCENT Protective Device For Harness Art |
| 1929 DAY Device For Washing Golf Balls Patent |
| 1929 MOODY Safety Device For Submarines Patent |
| 1929 KARL Device For Strengthening The Gums Art |
| 1929 OTTO Damping Device For Cornets Patent |
| 1929 GABRIEL Steering Device For Skis Patent |
| 1929 ANDREW Safety Device For Submarines Patent |
| 1929 ROMOLO Brake Device For Lifeboats Patent |
| 1929 AMANDUS Safety Device For Submarines Patent |
| 1929 RAYNOR Device For Sewing Powder Puffs Art |
| 1929 ARTHUR Oaring Device For Rowboats Patent |
| 1929 FIXEL Safety Device For Aeroplanes Patent |
| 1929 OTTO Tipping Device For Vehicles Patent |
| 1929 ATEN Braking Device For Aircraft Patent |
| 1929 ANDREW Braking Device For Aeroplanes Patent |
| 1929 BENO Anchoring Device For Airships Patent |
| 1929 JONES Antigoring Device For Bulls Patent |
| 1929 MYER Safety Device For Vehicles Patent |
| 1929 AUGUST Propelling Device For Boats Patent |
| 1929 DU Device For Retrieving Golf Balls Patent |