| 1921 ROBERT Rxplosively Actuated Penetrating Means |
| 1921 WALTER HADDON Method Means Actuating Gun Triggers |
| 1921 MOSES M KAHN Dump Body Partition Operating Means |
| 1921 SIGFRID Clock Means Winding Same Art Print |
| 1921 FRENCH Propulsion Means For Vehicles Patent |
| 1921 MILLER Steering Post Locking Means Patent |
| 1921 TALMAGE Automatic Switch Operating Means |
| 1921 JOHN Means Unloading Floatable Cargoes Art |
| 1921 HAROLD Means Folding Planes Aircraft Art |
| 1921 HARDET Means Regulating Timepieces Like Art |
| 1921 SPERRY Driving Governing Means Torpedoes |
| 1921 MORITZ Means Transporting Oil By Water Art |
| 1921 HAWKINS Means Adjusting Horn Actions Art |
| 1921 KAHN Dump Body Partition Operating Means |
| 1921 HINCKLEY Means Straightening Cars Their Loads |
| 1921 HEBER Aircraft Launching Landing Means Art |
| 1921 GOGU Method Means Actuating Gun Triggers |
| 1921 HARGRAVE OSCAR Means Of Defense Patent |
| 1921 JOSEPH Aerial Torpedo Launching Means Art |
| 1921 RYAN Indicator Means For Car Seats Patent |
| 1921 WALTON Means For Mooring Ships Patent Print |
| 1921 FALCONER Identifying Means Automobiles Art |
| 1921 WALTER Means Preventing Jamming Machine Guns |