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3811415
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Patent number 3,811,415
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Issue date May 21, 1974
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F22 - STEAM GENERATION
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3311091
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Patent number 3,311,091
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F22 - STEAM GENERATION
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3232282
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Patent number 3,232,282
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F22 - STEAM GENERATION
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3204613
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F28 - HEAT EXCHANGE IN GENERAL
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3128736
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Patent number 3,128,736
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F22 - STEAM GENERATION
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3027882
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Patent number 3,027,882
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F22 - STEAM GENERATION
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2883973
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Patent number 2,883,973
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F22 - STEAM GENERATION
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2870750
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Patent number 2,870,750
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F22 - STEAM GENERATION
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2836155
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Patent number 2,836,155
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F22 - STEAM GENERATION
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2773487
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Patent number 2,773,487
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F22 - STEAM GENERATION
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2700375
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Patent number 2,700,375
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F22 - STEAM GENERATION
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2649846
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Patent number 2,649,846
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F22 - STEAM GENERATION
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2648315
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F22 - STEAM GENERATION
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2536039
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Patent number 2,536,039
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F22 - STEAM GENERATION
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2515443
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Patent number 2,515,443
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F22 - STEAM GENERATION
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2512677
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Patent number 2,512,677
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F22 - STEAM GENERATION
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2292354
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Patent number 2,292,354
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F22 - STEAM GENERATION
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2231872
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F22 - STEAM GENERATION
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1959866
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Patent number 1,959,866
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F22 - STEAM GENERATION
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1949638
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Patent number 1,949,638
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F22 - STEAM GENERATION
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1922599
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Patent number 1,922,599
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F22 - STEAM GENERATION
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1782096
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Patent number 1,782,096
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F22 - STEAM GENERATION
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1770606
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Patent number 1,770,606
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...