Sperry Rand Limited

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic valves and hydraulic systems
- Patent number 4,062,374
- Issue date Dec 13, 1977
- Sperry Rand Limited
- John Stephen Marshall
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Hydraulic systems
- Patent number RE29329
- Issue date Aug 2, 1977
- Sperry Rand Limited
- Ronald Bernard Walters
- 091 - Motors: expansible chamber type
Information Patent Grant
Hydraulic actuator controls
- Patent number 4,031,813
- Issue date Jun 28, 1977
- Sperry Rand Limited
- Ronald Bernard Walters
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Pressure control in hydraulic systems
- Patent number 3,957,396
- Issue date May 18, 1976
- Sperry Rand Limited
- John Edwin Cooper
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Flow sensors
- Patent number 3,953,819
- Issue date Apr 27, 1976
- Sperry Rand Limited
- Donald Keerie
- G01 - MEASURING TESTING

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