| 1934 FRANK Automatic Radio Tuning Mechanism Art |
| 1952 FRANK Looper Mechanism Blind Stitch Sewing Machine |
| 1949 FRANK Power Steering Propelling Mechanism |
| 1944 FRANK DITCHFIELD Door Lift Mechanism Patent |
| 1940 FRANK Automatic Button Mechanism Patent |
| 1943 FRANK Trimmer Mechanism Sewing Machines Art |
| 1933 BOOTH FRANK Timing Mechanism Patent Print |
| 1943 FRANK DITCHFIELD Door Mechanism Patent |
| 1945 FRANK Lifting Mechanism Sliding Doors Art |
| 1943 FRANK Feeding Mechanism Sewing Machines Art |
| 1939 MILLER FRANK Brake Mechanism Patent Print |
| 1961 FRANK Chassis Mechanism Wheeled Vehicles |
| 1943 FRANK Rotary Loop Taker Mechanism Sewing Machines |
| 1931 FICHTEN FRANK Clock Mechanism Patent Print |
| 1925 PRINDLE FRANK Treadle Mechanism Patent |
| 1930 FRANK Anchor Weighing Casting Mechanism Art |
| 1925 FRANK Helicopter Mechanism Flying Machines |
| 1943 FRANK Stitch Forming Mechanism Sewing Machines |
| 1952 FRANK Aircraft Control Mechanism Patent |
| 1932 FRANK C WEBB Lever Locking Mechanism Patent |
| 1951 FRANK Magnetic Escapement Counting Mechanism |
| 1951 FRANK Escapement Mechanism Patent Print Art |
| 1954 FRANK Escapement Mechanism Patent Print Art |
| 1946 KAYLER FRANK Coupler Mechanism Patent Print |
| 1944 FRANK Feeding Mechanism Sewing Machines Art |
| 1943 FRANK DITCHFIELD Door Lift Mechanism Patent |
| 1949 FRANK Loop Taker Mechanism Sewing Machines |
| 1942 FRANK ERNY Control Mechanism Patent Print |
| 1942 SMITH FRANK Timing Mechanism Patent Print |
| 1944 FRANK Needle Vibrating Mechanism Sewing Machines |
| 1937 FRANK Valve Action Mechanism Wind Instruments |
| 1950 FRANK Lift Mechanism For Sliding Doors Art |
| 1952 FRANK Escapement Mechanism Patent Print Art |
| 1956 FRANK Magnetic Escapement Mechanism Patent |
| 1930 FRANK Clock Actuating Mechanism Patent |
| 1920 FRANK Brake Mechanism For Mining Cars Art |
| 1920 FRANK Driving Mechanism Airplanes Art Print |
| 1924 FRANK Trigger Mechanism For Guns Patent |
| 1943 FRANK Loop Taker Mechanism Sewing Machines |
| 1947 FRANK Lifting Mechanism Sliding Car Doors |
| 1942 FRANK Door Elevating Supporting Mechanism |