| 1927 ROBERT Railway Switch Locking Operating Means |
| 1927 ELECTROLOCK Automobile Locking Means Art |
| 1927 PAUL Safety Locking Device Patent Print Art |
| 1927 WALDEMAR Doll's Eyes With Locking Mechanism |
| 1927 INLAND MFG CO Locking Steering Wheel Patent |
| 1927 LUCAS Door Locking Device For Cane Cars Art |
| 1927 NELSON JOHN Locking Mechanism Patent Print |
| 1927 RAMAPO AJAX CORP Safety Locking Device Art |
| 1927 HEMINGWAY Automobile Locking Means Patent |
| 1927 HARRY A DOUGLAS Locking Mechanism Patent |
| 1927 JAMES Switch Throwing Locking Art Print |
| 1927 THORN Switch Throwing Locking Mechanism Art |
| 1927 GEYER Locking Steering Wheel Patent Print |
| 1927 JOHAN Locking Mechanism Hammerless Shotguns Rifles |
| 1927 MINNIE BISHOP Locking Device Patent Print |
| 1927 AMERICAN CAR FOUNDRY CO Door Locking Cane Cars |
| 1927 TED Automobile Locking Apparatus Patent |
| 1927 GRAUEL Locking Device Control Patent Print |
| 1927 GRIFFEY Railway Switch Locking Operating Means |
| 1927 ITHACA GUN CO Barrel Locking Breakdown Guns |
| 1927 BAXTER Removable Truck Body Locking Mechanism |
| 1927 DE Locking Device For Spouts Patent Print |
| 1927 ORESTE Locking Motor Vehicles Art Print |
| 1927 GRAULOCK Locking Control Art Print Patent |
| 1927 SMITH Barrel Locking Mechanism Breakdown Guns |
| 1927 JOHNSON Transmission Housing Cover Locking Means |