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Inboard seal mounting
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Patent number 4,373,575
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Issue date Feb 15, 1983
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General Motors Corporation
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John R. Hayes
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F28 - HEAT EXCHANGE IN GENERAL
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Trunnion air seal
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Patent number 4,372,371
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Issue date Feb 8, 1983
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The Air Preheater Company, Inc.
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Roderick J. Baker
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F28 - HEAT EXCHANGE IN GENERAL
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Static seal
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Patent number 4,166,496
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Issue date Sep 4, 1979
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The Air Preheater Company, Inc.
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Richard F. Stockman
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F28 - HEAT EXCHANGE IN GENERAL
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Sector plate
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Patent number 4,124,063
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Issue date Nov 7, 1978
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The Air Preheater Company, Inc.
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Richard F. Stockman
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F28 - HEAT EXCHANGE IN GENERAL
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3882927
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Patent number 3,882,927
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Issue date May 13, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3875993
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Patent number 3,875,993
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Issue date Apr 8, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3785431
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Patent number 3,785,431
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Issue date Jan 15, 1974
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F28 - HEAT EXCHANGE IN GENERAL
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3780791
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Patent number 3,780,791
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Issue date Dec 25, 1973
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F28 - HEAT EXCHANGE IN GENERAL
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3773105
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Patent number 3,773,105
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Issue date Nov 20, 1973
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F28 - HEAT EXCHANGE IN GENERAL
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3724533
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Patent number 3,724,533
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Issue date Apr 3, 1973
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F28 - HEAT EXCHANGE IN GENERAL
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3703206
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Patent number 3,703,206
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Issue date Nov 21, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3692097
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Patent number 3,692,097
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Issue date Sep 19, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3692098
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Patent number 3,692,098
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Issue date Sep 19, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3678991
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Patent number 3,678,991
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Issue date Jul 25, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3542122
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Patent number 3,542,122
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Issue date Nov 24, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3534807
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Patent number 3,534,807
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Issue date Oct 20, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3534808
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Patent number 3,534,808
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Issue date Oct 20, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3511309
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Patent number 3,511,309
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Issue date May 12, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3499480
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Patent number 3,499,480
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Issue date Mar 10, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3482622
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Patent number 3,482,622
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Issue date Dec 9, 1969
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F28 - HEAT EXCHANGE IN GENERAL