| 1922 HEDGCOCK Reversible Fulcrum Structure Art |
| 1922 AMERICAN Reversible Fulcrum Arrangement Art |
| 1939 AURIEN Carrier Iron And Brake Fulcrum Art |
| 1963 CURTIS Movable Fulcrum For Springboards Art |
| 1922 AMERICAN Reversible Fulcrum Mechanism Art |
| 1922 HEDGCOCK Brake Beam Reversible Fulcrum Art |
| 1932 CURTIS Adjustable Equalizer Fulcrum Art |
| 1939 AMERICAN Carrier Iron Brake Fulcrum Art |
| 1922 HEDGCOCK Reversible Fulcrum Mechanism Art |
| 1922 WHITNEY Brake Beam Fulcrum Patent Print Art |
| 1922 HEDGCOCK Fulcrum Mechanism Patent Print Art |
| 1922 ARTHUR Reversible Fulcrum Arrangement Art |
| 1922 AMERICAN Brake Beam Reversible Fulcrum Art |
| 1949 SHAFFER Dead Lever Fulcrum Patent Print Art |
| 1950 ZIMMER Fulcrum Car Door Locking Means Art |
| 1922 AMERICAN Reversible Fulcrum Structure Art |
| 1922 HEDGCOCK Reversible Fulcrum Arrangement Art |
| 1931 AINSWORTH Adjustable Equalizer Fulcrum Art |
| 1950 ENTPR Fulcrum Car Door Locking Means Art |
| 1943 HARLEY Equalizing Fulcrum Arrangement Art |