| 1921 RUSHTON Torpedo Transporting Firing Explosives |
| 1921 CURRIER JAMES Torpedo GOVERNMENT Patent |
| 1921 DAVENPORT Torpedo Placing Device Patent |
| 1921 DYE Radio Aerial Mechanical Torpedo Patent 22378 |
| 1921 COLUMBIA Railway Signal Torpedo Art Print |
| 1921 JENSEN BEARLUNDD Torpedo Patent Print Art |
| 1921 CHARLES BLUM Torpedo Patent Print Art |
| 1921 FLINT JAMES Torpedo GOVERNMENT Patent Print |
| 1921 CRAWFORD Torpedo Obstructing Projectile Art |
| 1921 JOHNSON Aerial Torpedo Or Bomb Patent Print |
| 1921 BOHAN Self Intrenching Subsurface Land Torpedo |
| 1921 FRANKLIN CLARENCE Railway Torpedo Patent |
| 1921 OSCAR L STRAUB Aerial Torpedo Mine Art |
| 1921 SPERRY GYROSCOPE LTD Hunting Automobile Torpedo |
| 1921 HUGO CENTERVALL Aerial Torpedo Patent Print |
| 1921 LUTHER BOESCH Torpedo US GOVERNMENT Patent |
| 1921 GOVERNMENT Torpedo Patent Print Art |
| 1921 WHITON Protecting Ships Against Torpedo Attacks |
| 1921 WHITON Protection Ships Against Torpedo Attacks |
| 1921 WHITEHEAD TORPEDO WORKS WEYMOU Automobile Torpedo |
| 1921 US GOVERNMENT Torpedo Patent Print Art |
| 1921 CENTRAL RAILWAY SIGNAL Railway Signal Torpedo |
| 1921 SCHOOLEY Railway Signal Torpedo Patent |
| 1921 LAKE TORPEDO BOAT Submarine Torpedo Boat |
| 1921 BRANDT EDMUND Torpedo Patent Print Art |
| 1921 MEADE Aerial Torpedo Or Mine Patent Print |
| 1921 JOEL DYE Radio Aerial Torpedo Patent Print |
| 1921 LLOYD GILES Aerial Torpedo Patent Print Art |
| 1921 BOWKER Torpedo Transporting Explosives Patent22382 |
| 1921 ELEMER Hunting Automobile Torpedo Patent |
| 1921 JOSEPH Aerial Torpedo Launching Means Art |
| 1921 JOSEPH Submarine Torpedo Boat Patent Print |
| 1921 HENRY Torpedo Guard Or Shield Patent Print |
| 1921 HORACE SODEAU Automobile Torpedo Patent |
| 1921 JOHN W MCDONEL EARL K CUNNINGHAM Railway Torpedo |
| 1921 FRANK Railway Signal Torpedo Patent Print |
| 1921 HAMMOND Controlling Torpedo Firing Art |
| 1921 MCMAHON Torpedo Tube Torpedo Firing Mechanism |