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| Number | Title | Issue Date |
| 4033872 | Reservoir tank A reservoir tank has filling and outlet ports which are provided in a common aperture formed through the tank top.... | 07/05/1977 |
| 4032447 | Oil cleaning system comprising an engine block adapter and centrifugal cleaning means An adapter is mounted between an engine and a standard oil filter connected to a hydraulic motor which drives a centrifugal drum, the adapter also delivers metered quantities of the oil to an inside of the centrifugal drum, and an outlet from the centrifu... | 06/28/1977 |
| 4028247 | Vibratory coolant strainer for machine tool coolant systems A vibratory coolant strainer for a cutting tool coolant supply system for a machine tool. A strainer screen assembly is rotatably mounted on a coolant system fixed supply pipe. A yoke is attached to the upper section of the strainer screen assembly and it... | 06/07/1977 |
| 3985652 | Dual coaxial bidirectional valves and filter assemblies and hydrostat systems containing the same Dual coaxial bidirectional valves are provided for use in fluid systems such as hydrostat systems where flow can proceed in opposite directions, and which direct flow through a unidirectional or multidirectional function such as a filter assembly in such ... | 10/12/1976 |
| 3954611 | Portable apparatus and method for purifying lubricating oil in various devices Disclosed is a portable apparatus and method for purifying lubricating oil in remotely separated devices, such as gearboxes and motors on oil well pumping equipment. The apparatus is mounted on a vehicle, such as a trailer, and has separate tanks thereon ... | 05/04/1976 |
