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3556321
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Patent number 3,556,321
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Issue date Jan 19, 1971
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B66 - HOISTING LIFTING HAULING
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3499564
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Patent number 3,499,564
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Issue date Mar 10, 1970
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B66 - HOISTING LIFTING HAULING
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3499565
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Patent number 3,499,565
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Issue date Mar 10, 1970
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B66 - HOISTING LIFTING HAULING
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3415499
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Patent number 3,415,499
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Issue date Dec 10, 1968
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B66 - HOISTING LIFTING HAULING
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3378153
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Patent number 3,378,153
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Issue date Apr 16, 1968
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B66 - HOISTING LIFTING HAULING
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3034669
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Patent number 3,034,669
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Issue date May 15, 1962
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B66 - HOISTING LIFTING HAULING
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2700482
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Patent number 2,700,482
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Issue date Jan 25, 1955
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B66 - HOISTING LIFTING HAULING
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2693891
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Patent number 2,693,891
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Issue date Nov 9, 1954
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B66 - HOISTING LIFTING HAULING
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2659502
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Patent number 2,659,502
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Issue date Nov 17, 1953
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B66 - HOISTING LIFTING HAULING
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2581067
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Patent number 2,581,067
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Issue date Jan 1, 1952
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B66 - HOISTING LIFTING HAULING
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2431047
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Patent number 2,431,047
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Issue date Nov 18, 1947
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B28 - WORKING CEMENT, CLAY, OR STONE
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2125547
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Patent number 2,125,547
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Issue date Aug 2, 1938
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B66 - HOISTING LIFTING HAULING
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1993081
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Patent number 1,993,081
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Issue date Mar 5, 1935
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B66 - HOISTING LIFTING HAULING
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1874711
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Patent number 1,874,711
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Issue date Aug 30, 1932
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B66 - HOISTING LIFTING HAULING
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1781211
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Patent number 1,781,211
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Issue date Nov 11, 1930
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B66 - HOISTING LIFTING HAULING
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1707197
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Patent number 1,707,197
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Issue date Mar 26, 1929
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B66 - HOISTING LIFTING HAULING
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1687278
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Patent number 1,687,278
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Issue date Oct 9, 1928
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B66 - HOISTING LIFTING HAULING
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1673911
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Patent number 1,673,911
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Issue date Jun 19, 1928
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B66 - HOISTING LIFTING HAULING
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1650847
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Patent number 1,650,847
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B66 - HOISTING LIFTING HAULING
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1601698
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Patent number 1,601,698
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B66 - HOISTING LIFTING HAULING
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1570302
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Patent number 1,570,302
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Issue date Jan 19, 1926
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B66 - HOISTING LIFTING HAULING
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1563486
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Patent number 1,563,486
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Issue date Dec 1, 1925
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B66 - HOISTING LIFTING HAULING
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1550262
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Patent number 1,550,262
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B66 - HOISTING LIFTING HAULING
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1534891
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Patent number 1,534,891
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B66 - HOISTING LIFTING HAULING
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1487196
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Patent number 1,487,196
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Issue date Mar 18, 1924
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B66 - HOISTING LIFTING HAULING
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1465512
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Patent number 1,465,512
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Issue date Aug 21, 1923
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B66 - HOISTING LIFTING HAULING
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1455214
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Patent number 1,455,214
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Issue date May 15, 1923
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B66 - HOISTING LIFTING HAULING
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1446339
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Patent number 1,446,339
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Issue date Feb 20, 1923
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B66 - HOISTING LIFTING HAULING
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1394915
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Patent number 1,394,915
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Issue date Oct 25, 1921
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B66 - HOISTING LIFTING HAULING