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US1883940A
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Method of and apparatus for controlling carbon dioxide gaseous mixtures
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US1883941A
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Method of and apparatus for standardizing carbon dioxide gaseous mixtures
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US1873101A
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Refrigeration and the like
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US1883939A
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Refrigerating apparatus and method
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US1843038A
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Refrigerated package and method
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US1843026A
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Heat transfer system and method
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US1825068A
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Refrigerating apparatus, package and method
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US1882640A
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Refrigerating and display apparatus and method
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US1925537A
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Refrigerating apparatus and method
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US1822851A
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Refrigerating apparatus and method
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US1871829A
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Refrigeratory container
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US1877187A
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Refrigerating apparatus and method
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US1887693A
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Refrigerating apparatus and method
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US1873130A
|
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Contact freezing apparatus and method
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US1887687A
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Refrigerating method and apparatus
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US1870684A
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Heat exchange method and apparatus
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US1883938A
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Package and container
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US1873364A
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Refrigerating apparatus and method
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GB335235A
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Improvements in and relating to refrigerating packages
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GB331077A
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Improvements in and relating to carbon dioxide ice apparatus, process, and product
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