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Liquid closing device
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Patent number 4,681,131
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Issue date Jul 21, 1987
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Jose I. Uriarte
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E03 - WATER SUPPLY SEWERAGE
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Cleanout fitting
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Patent number 4,360,041
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Issue date Nov 23, 1982
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The Cretex Companies, Inc.
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John D. Hagan
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3229707
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Patent number 3,229,707
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Issue date Jan 18, 1966
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E03 - WATER SUPPLY SEWERAGE
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2520859
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Patent number 2,520,859
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Issue date Aug 29, 1950
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E03 - WATER SUPPLY SEWERAGE
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2329997
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Patent number 2,329,997
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Issue date Sep 21, 1943
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E03 - WATER SUPPLY SEWERAGE
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2297967
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Patent number 2,297,967
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Issue date Oct 6, 1942
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E03 - WATER SUPPLY SEWERAGE
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2277337
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Patent number 2,277,337
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Issue date Mar 24, 1942
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E03 - WATER SUPPLY SEWERAGE
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1974359
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Patent number 1,974,359
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Issue date Sep 18, 1934
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E03 - WATER SUPPLY SEWERAGE
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1951645
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Patent number 1,951,645
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Issue date Mar 20, 1934
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E03 - WATER SUPPLY SEWERAGE
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1951632
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Patent number 1,951,632
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Issue date Mar 20, 1934
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E03 - WATER SUPPLY SEWERAGE
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1951253
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Patent number 1,951,253
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Issue date Mar 13, 1934
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E03 - WATER SUPPLY SEWERAGE
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1819253
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Patent number 1,819,253
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Issue date Aug 18, 1931
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E03 - WATER SUPPLY SEWERAGE
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1779102
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Patent number 1,779,102
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Issue date Oct 21, 1930
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E03 - WATER SUPPLY SEWERAGE
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1686926
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Patent number 1,686,926
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Issue date Oct 9, 1928
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E03 - WATER SUPPLY SEWERAGE
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1537955
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Patent number 1,537,955
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Issue date May 19, 1925
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E03 - WATER SUPPLY SEWERAGE
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1529174
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Patent number 1,529,174
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Issue date Mar 10, 1925
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E03 - WATER SUPPLY SEWERAGE
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1509252
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Patent number 1,509,252
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E03 - WATER SUPPLY SEWERAGE
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1375023
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Patent number 1,375,023
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E03 - WATER SUPPLY SEWERAGE
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1261129
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Patent number 1,261,129
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1211210
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Patent number 1,211,210
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Issue date Jan 2, 1917
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E03 - WATER SUPPLY SEWERAGE
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1193527
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Patent number 1,193,527
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Issue date Aug 8, 1916
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E03 - WATER SUPPLY SEWERAGE
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1190643
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Patent number 1,190,643
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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1153247
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Patent number 1,153,247
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Issue date Sep 14, 1915
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E03 - WATER SUPPLY SEWERAGE
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1099069
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Patent number 1,099,069
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E03 - WATER SUPPLY SEWERAGE
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1016342
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Patent number 1,016,342
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Issue date Feb 6, 1912
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E03 - WATER SUPPLY SEWERAGE
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1011035
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Patent number 1,011,035
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Issue date Dec 5, 1911
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E03 - WATER SUPPLY SEWERAGE