the movement being reciprocating or oscillating

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    • F28 - HEAT EXCHANGE IN GENERAL
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    Apparatus for removal and cooling of ash from the bed of a fluidize...

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    • F28 - HEAT EXCHANGE IN GENERAL
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    3369598

    • Patent number 3,369,598
    • Issue date Feb 20, 1968
    • F28 - HEAT EXCHANGE IN GENERAL
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    3263441

    • Patent number 3,263,441
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    3147799

    • Patent number 3,147,799
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    3006611

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    2573709

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