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DE2601291A1
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DEVICE FOR EXCHANGING SENSIBLE AND LATENTER HEAT BETWEEN TWO AIR FLOWS
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ZA7507908B
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Total heat energy exchangers
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ZA7404133B
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Dual fuel burner
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GB1347378A
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Rotary regenerative space heater
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US3702156A
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Air-to-air energy exchange wheel and method of fabrication
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US3701139A
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Apparatus for detecting interruption in the cyclic movement of a member
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Unitized air treating unit
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US3634669A
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Analog computation of insurance and investment quantities
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US3586029A
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Apparatus for automatically controlling fluid flow according to predetermined volumetric proportions
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US3527291A
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Expansion accommodating means and method
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US3489204A
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Apparatus for conditioning a flow of fluid
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US3451551A
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Free-flow filter bypass valve
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US3442384A
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Combination filter and surge resistant bypass valve
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US3487929A
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Mechanical-type filter bypass indicator
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US3487932A
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Filter element fairing means
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US3405922A
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Door heater
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US3405921A
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Air-heating gas burner
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US3443588A
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Damper means in air supply units or the like
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US3302684A
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Combination gas and liquid fuel burner
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US3302796A
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Barrier filter element assembly
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