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US2730265A
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Reinforcement structure for disks
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US2494098A
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Automatically controlled recovery of heat and so2 gas from relief gases and waste liquor
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US2217316A
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Plate stack heat exchanger
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US2360900A
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Heat reclaiming system
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US2236976A
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Method of making heat exchangers
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US2267619A
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Method of manufacturing plate heat exchangers
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US2218152A
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Draining device
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US2329727A
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Utilization of waste heat
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CA411735A
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Evaporating apparatus
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CA476230A
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Methods of maintaining surface heat exchangers substantially clean as regards incrustations
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CA528707A
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Reinforcement structure for disks
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CA438442A
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Heat and so2 gas recovery in the cooking of sulphite cellulose
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CA402746A
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Tubular film evaporating apparatus
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CA412043A
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Tube and sheet connection
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