| 1947 HALL Fluid Pressure Control Valve Patent |
| 1940 SIDNEY Fluid Pressure Transmission Patent |
| 1954 WILLIAM Fluid Pressure Control Valve Patent |
| 1931 SCHWENTLER Fluid Pressure Brake Patent |
| 1947 HEWITT Fluid Pressure Brake Patent Print |
| 1950 HESS Fluid Pressure Switch Patent Print Art |
| 1941 MACNEIL Fluid Pressure System Patent Print |
| 1951 FITCH Fluid Pressure Operated Gun Patent |
| 1938 FITCH Fluid Pressure Brake Patent Print Art |
| 1923 FARMER Fluid Pressure Brake Patent Print |
| 1965 WOOD Fluid Pressure Operated Valve Patent |
| 1945 HENRY Fluid Pressure Brake Patent Print Art |
| 1936 SILLCOX Fluid Pressure Brake Patent Print |
| 1926 FARMER Fluid Pressure Brake Patent Print |
| 1956 WILLIAM Fluid Pressure Mechanisms Patent |
| 1940 BOWEN Fluid Pressure Braking System Patent |
| 1962 GIRLING LTD Fluid Pressure Actuators Patent |
| 1964 WEBCOR INC Fluid Pressure Ejector Patent |
| 1928 ANDERSON Fluid Pressure Horn Patent Print |
| 1951 CLAIR Design Fluid Pressure Gauge Patent 48600 |
| 1938 STEWART Fluid Pressure Brake Patent Print |
| 1939 FARMER Fluid Pressure Brake Patent Print |
| 1956 BENNETT Fluid Pressure Impulse Timer Patent 24831 |
| 1951 HARRY Fluid Pressure Operated Switch Patent |
| 1933 HEWITT Fluid Pressure Brake Patent Print |
| 1955 WILLIAM Fluid Pressure Control Valve Patent |
| 1926 DOWN SIDNEY Fluid Pressure Brake Patent |
| 1935 ANDERSON Fluid Pressure Valve Patent Print |
| 1953 FITCH Fluid Pressure Operated Gun Patent |
| 1933 MCCUNE Fluid Pressure Brake Patent Print |
| 1954 WILLIAM Fluid Pressure Valve Patent Print |
| 1942 NARDONE Fluid Pressure Generation Patent |
| 1927 THOMAS Fluid Pressure Brake Patent Print |
| 1926 DAPRON Fluid Pressure Brake Patent Print |
| 1943 STEVE Fluid Pressure Control System Patent |
| 1924 FARMER Fluid Pressure Brake Patent Print |
| 1959 RADCLIFFE Fluid Pressure Dampers Patent |
| 1962 BARRYMORE Fluid Pressure Actuators Patent |
| 1938 FARMER Fluid Pressure Brake Patent Print |
| 1958 SIDNEY Fluid Pressure Control Means Patent |
| 1937 MCCUNE Fluid Pressure Brake Patent Print |
| 1895 JAMES Fluid Pressure Brake Patent 18417 |
| 1944 WILLIAM Fluid Pressure Cylinder Patent |
| 1924 MARTIN Fluid Pressure Bell Ringer Patent |
| 1944 STEVE Fluid Pressure Control System Patent |
| 1964 HIROSHI Fluid Pressure Ejector Patent Print |
| 1920 AUGUSTIN Fluid Pressure Coupling Patent |