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US2591600A
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Radiosonde calibration method
|
|
US2444111A
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System for improving operation of electrical hygrometers in radiosondes
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Automatic phase synchronizing system for synchronous motors
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US2366423A
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Radiosonde antenna system
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Modulation system
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Radio beacon system
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Radio beacon system
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Radio beacon system
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Assembly jig
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Radiosonde box
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Radiosonde humidity element
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Radiosonde pressure element
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Radio landing control system
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Radio guidance system
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Model airplane
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Earth inductor compass
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Indicating means for radio landing systems
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Load stabilizing means for modulation systems
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Modulation system
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US2232591A
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Modulation system
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