| 1935 HENNESSY Variable Fluid Operated Elevating Truck |
| 1956 REA Fluid Pressure Operated Telescopic Hoists |
| 1931 EPPLEY Fluid Operated Mechanism Railway Switches |
| 1956 HEIL CO Fluid Pressure Operated Telescopic Hoists |
| 1970 JACQUIN Fluid Operated Valve Nozzle Arrangement |
| 1955 JACK Fluid Pressure Operated Control Systems |
| 1950 DUNLOP RUBBER CO Fluid Operated Brake System |
| 1929 SCHMOHL Fluid Pressure Operated Railway Dump Car |
| 1962 KLINE Compressed Fluid Operated Small Arms Weapons |
| 1950 GLEISEN Fluid Pressure Operated Switch Art |
| 1951 FITCH Fluid Pressure Operated Gun Patent |
| 1939 MACDONALD Fluid Pressure Operated Jack Art |
| 1966 COPE Fluid Operated Uncoupling Mechanism |
| 1965 WOOD Fluid Pressure Operated Valve Patent |
| 1965 Fluid Operated Tilting Dump Truck Stabilizer |
| 1942 JEAN Distributor Fluid Operated Art Print |
| 1966 SYMINGTON Fluid Operated Uncoupling Mechanism |
| 1970 PAWLOSKI Fluid Operated Hand Tool Patent 6366 |
| 1950 WILLIAM Fluid Operated Brake System Patent |
| 1956 KNIGHTS Fluid Pressure Operated Jacks Art |
| 1949 LEONARD Testing Fluid Operated Switches |
| 1954 ZUMBUSCH Pressure Fluid Operated Control |
| 1951 SPEED DEV LTD Fluid Pressure Operated Switch |
| 1951 HARRY Fluid Pressure Operated Switch Patent |
| 1952 GERHART Fluid Motor Operated Toy Vehicle |
| 1970 US NAVY Fluid Operated Valve Nozzle Arrangement |
| 1940 STEPHENSON Fluid Operated Diving Platform |
| 1953 FITCH Fluid Pressure Operated Gun Patent |
| 1924 RAFFERTY Fluid Operated Whistle Valve Art |
| 1941 JEAN MERCIER Fluid Operated Jack Patent |
| 1950 JAMES Fluid Pressure Operated Master Cylinder |
| 1948 EASTMAN Fluid Pressure Operated Mechanism |
| 1964 BUELL Fluid Operated Sonic Transducer Art |
| 1964 BUELL Fluid Operated Sonic Transducer |
| 1951 ALBRIGHT Fluid Pressure Operated Steering |
| 1925 HANS Ship'S Propeller Fluid Operated Reaction Type |
| 1929 PRESSED Fluid Pressure Operated Railway Dump Car |