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Automatic mechanism for controlling erection of a gyrovertical
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Gyroscope instrument with dual purpose motors
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Gyroscope starting device
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Gravity erected gyroscope
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Gyroscope erecting device
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Flight control system
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Servo mechanism
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Gyroscopic navigational instrument
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Gyroscopic control instrument
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Aircraft altitude control instrument
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Gyro pilot
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Gyroscopic control apparatus
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Attitude-indicating flight instrument
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Gyroscopic flight indicating instrument
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Gyro vertical
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Friction-actuated erecting mechanism
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Gyroscopic attitude indicating instrument
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Ground speed indicator
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Navigational instrument
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