| 1958 CHRISTENSEN Hydraulic Positioning Art |
| 1958 ROBERT Hydraulic Ejection Equipment Missiles |
| 1958 TECNO Automatic Adjustment Safety Hydraulic Brakes |
| 1958 DOUGLAS Hydraulic Power System Patent Print |
| 1958 FOSTER Emergency Actuator Hydraulic Cylinders |
| 1958 WOOD Hydraulic Lift Return Control Means |
| 1958 WARD Mobile Hydraulic Catapulting Art |
| 1958 PACIFIC CAR FOUNDRY COMPAN Hydraulic Draft Gears |
| 1958 OILGEAR CO Hydraulic Power System Patent |
| 1958 GEN ELECTRIC Hydraulic Positioning Art |
| 1958 WICKE Design Hydraulic Crane Unit H M Patent 44566 |
| 1958 EAMES Hydraulic Feeding Mechanism A Firearm |
| 1958 HENRY Hydraulic Aircraft Control Actuator |
| 1958 JEAN Hydraulic Transmitter With Follow Up |
| 1958 CHRISTOPH Hydraulic Power Amplifier Patent |
| 1958 TASK CORP Mobile Hydraulic Catapulting Art |
| 1958 HENRIKSON Hydraulic Draft Gears Patent |
| 1958 SKAGGS Hydraulic Stilts Games EVERETT Patent 29719 |
| 1958 HARVEY Hydraulic Actuated Firing Pin A Firearm |
| 1958 GEORGE Hydraulic Steering Mechanism Patent |
| 1958 PENGRA Hydraulic Lift Fish Like Art Print |