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2965122
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Patent number 2,965,122
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Issue date Dec 20, 1960
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E03 - WATER SUPPLY SEWERAGE
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2468692
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Patent number 2,468,692
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Issue date Apr 26, 1949
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G01 - MEASURING TESTING
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2090551
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Patent number 2,090,551
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Issue date Aug 17, 1937
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E03 - WATER SUPPLY SEWERAGE
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1345383
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Patent number 1,345,383
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Issue date Jul 6, 1920
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G05 - CONTROLLING REGULATING
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1129898
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Patent number 1,129,898
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Issue date Mar 2, 1915
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E03 - WATER SUPPLY SEWERAGE
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870916
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Patent number 870,916
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Issue date Nov 12, 1907
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E03 - WATER SUPPLY SEWERAGE
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847361
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Patent number 847,361
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Issue date Mar 19, 1907
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E03 - WATER SUPPLY SEWERAGE
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785224
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Patent number 785,224
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Issue date Mar 21, 1905
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G01 - MEASURING TESTING
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776014
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Patent number 776,014
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Issue date Nov 29, 1904
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E03 - WATER SUPPLY SEWERAGE
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579315
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Patent number 579,315
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Issue date Mar 23, 1897
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E03 - WATER SUPPLY SEWERAGE
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543013
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Patent number 543,013
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Issue date Jul 23, 1895
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E03 - WATER SUPPLY SEWERAGE
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444310
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Patent number 444,310
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Issue date Jan 6, 1891
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E03 - WATER SUPPLY SEWERAGE
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397659
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Patent number 397,659
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Issue date Feb 12, 1889
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E03 - WATER SUPPLY SEWERAGE
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370372
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Patent number 370,372
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Issue date Sep 27, 1887
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E03 - WATER SUPPLY SEWERAGE
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354591
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Patent number 354,591
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Issue date Dec 21, 1886
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E03 - WATER SUPPLY SEWERAGE