Several non-coaxial propellers driven by only one engine

Patents Grantslast 30 patents

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    2414765

    • Patent number 2,414,765
    • Issue date Jan 21, 1947
    • B64 - AIRCRAFT AVIATION COSMONAUTICS
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    2388718

    • Patent number 2,388,718
    • Issue date Nov 13, 1945
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    2326104

    • Patent number 2,326,104
    • Issue date Aug 3, 1943
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    2293279

    • Patent number 2,293,279
    • Issue date Aug 18, 1942
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    2219980

    • Patent number 2,219,980
    • Issue date Oct 29, 1940
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    2197293

    • Patent number 2,197,293
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    2185545

    • Patent number 2,185,545
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    2178725

    • Patent number 2,178,725
    • Issue date Nov 7, 1939
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    1896730

    • Patent number 1,896,730
    • Issue date Feb 7, 1933
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    1817952

    • Patent number 1,817,952
    • Issue date Aug 11, 1931
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    1771847

    • Patent number 1,771,847
    • Issue date Jul 29, 1930
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    1645154

    • Patent number 1,645,154
    • Issue date Oct 11, 1927
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    1523671

    • Patent number 1,523,671
    • Issue date Jan 20, 1925
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    1505091

    • Patent number 1,505,091
    • Issue date Aug 19, 1924
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    1421803

    • Patent number 1,421,803
    • Issue date Jul 4, 1922
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    1395695

    • Patent number 1,395,695
    • Issue date Nov 1, 1921
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    1389471

    • Patent number 1,389,471
    • Issue date Aug 30, 1921
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    1387899

    • Patent number 1,387,899
    • Issue date Aug 16, 1921
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    1360976

    • Patent number 1,360,976
    • Issue date Nov 30, 1920
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