Buttress dams

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Patents Grantslast 30 patents

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    2669845

    • Patent number 2,669,845
    • Issue date Feb 23, 1954
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    2666296

    • Patent number 2,666,296
    • Issue date Jan 19, 1954
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    2631434

    • Patent number 2,631,434
    • Issue date Mar 17, 1953
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    2566748

    • Patent number 2,566,748
    • Issue date Sep 4, 1951
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    2407952

    • Patent number 2,407,952
    • Issue date Sep 17, 1946
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    2178916

    • Patent number 2,178,916
    • Issue date Nov 7, 1939
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    2138071

    • Patent number 2,138,071
    • Issue date Nov 29, 1938
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    2133256

    • Patent number 2,133,256
    • Issue date Oct 11, 1938
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    2080637

    • Patent number 2,080,637
    • Issue date May 18, 1937
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    2038979

    • Patent number 2,038,979
    • Issue date Apr 28, 1936
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    2033027

    • Patent number 2,033,027
    • Issue date Mar 3, 1936
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    2029224

    • Patent number 2,029,224
    • Issue date Jan 28, 1936
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    1985745

    • Patent number 1,985,745
    • Issue date Dec 25, 1934
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    1965988

    • Patent number 1,965,988
    • Issue date Jul 10, 1934
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    1933092

    • Patent number 1,933,092
    • Issue date Oct 31, 1933
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    1907999

    • Patent number 1,907,999
    • Issue date May 9, 1933
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    1902353

    • Patent number 1,902,353
    • Issue date Mar 21, 1933
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    1867119

    • Patent number 1,867,119
    • Issue date Jul 12, 1932
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    1864976

    • Patent number 1,864,976
    • Issue date Jun 28, 1932
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    1863205

    • Patent number 1,863,205
    • Issue date Jun 14, 1932
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    1853668

    • Patent number 1,853,668
    • Issue date Apr 12, 1932
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    1853545

    • Patent number 1,853,545
    • Issue date Apr 12, 1932
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    1846839

    • Patent number 1,846,839
    • Issue date Feb 23, 1932
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    1846838

    • Patent number 1,846,838
    • Issue date Feb 23, 1932
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    1846840

    • Patent number 1,846,840
    • Issue date Feb 23, 1932
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    1840540

    • Patent number 1,840,540
    • Issue date Jan 12, 1932
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    1836333

    • Patent number 1,836,333
    • Issue date Dec 15, 1931
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    1807358

    • Patent number 1,807,358
    • Issue date May 26, 1931
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    1796898

    • Patent number 1,796,898
    • Issue date Mar 17, 1931
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  • Information Patent Grant

    1796868

    • Patent number 1,796,868
    • Issue date Mar 17, 1931
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Patents Applicationslast 30 patents