|
US3793882A
|
|
Measuring fuel consumption
|
|
US3729996A
|
|
Averaging digital rate indicator
|
|
US3722265A
|
|
Engine performance computing arrangement
|
|
US3346005A
|
|
Lined butterfly valves
|
|
US3304480A
|
|
Digital actuator including feedback representation of the stepper motor winding energization state
|
|
US3139728A
|
|
Self-contained valve actuator
|
|
US3157994A
|
|
Control system
|
|
US3083696A
|
|
Positioner
|
|
US2993476A
|
|
Actuator
|
|
US2993498A
|
|
Positioning device
|
|
US2870387A
|
|
Measuring and controlling servo-motor system
|
|
US2800771A
|
|
Pneumatic control system
|
|
US2616448A
|
|
Control system
|
|
CA791264A
|
|
Logic-controlled stepping motor
|
|
CA781319A
|
|
Lined butterfly valves
|
|
CA706690A
|
|
Positioner
|
