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Boiler economizer and control system
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Flake ice-making apparatus
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Vertical tube heat exchanger apparatus having resilient distributor devices and a resilient distributor device therefor
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Raised hardface overlay valve seat
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Damper
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Improvements in or relating to refrigerating apparatus
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Water distributing ferrule for vertical tube heat exchangers
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Scraper for double pipe chillers
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Spiral scraper for pipe type chillers
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Counterflow heat exchanger
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Unit tank heater
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Boiler construction
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Boiler and smoke breeching casing
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Compressor
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Coil type evaporator for refrigerating tanks
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Distributive refrigerating evaporator
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Cooling apparatus
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Refrigerating apparatus
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Floating head and test ring
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Refrigerating apparatus of the absorption type
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