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Books by United Aircraft Corporation.

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ORIGINAL PATENT APPLICATION NUMBER 868,419 FOR HYDRAULIC SYSTEM FOR ADJUSTABLE PITCH AERONAUTICAL PROPELLER. (DELAWARE, U.S.A.).
🇺🇸 United States
ORIGINAL PATENT APPLICATION NUMBER 868,419 FOR HYDRAULIC SY…
By: United Aircraft Corporation.
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ORIGINAL PATENT APPLICATION NUMBER 958,402 FOR A DIGITAL-ANALOGUE COMPARATOR (CONNECTICUT).
🇺🇸 United States
ORIGINAL PATENT APPLICATION NUMBER 958,402 FOR A DIGITAL-AN…
By: United Aircraft Corporation.
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