Browse Entries - O Obry Apparatus Torpedo Gyroscope - see Obry gyroscope (c. 1895 - ) Obry gyroscope (c. 1895 - ) Obry, Ludwig, Inventor and Naval officer The Ocean Greyhound - see The Turbinia (c. 1897 - 1924) The Otter Torpedo - see The Harvey Torpedo (c. 1869 - )
