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2310220
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1921893
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1887429
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Patent number 1,887,429
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Issue date Nov 8, 1932
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1800094
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Issue date Apr 7, 1931
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1793933
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1771654
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1434620
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B64 - AIRCRAFT AVIATION COSMONAUTICS