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US5878582A Method and apparatus for freezing food products 失效
冷冻食品的方法和设备

Method and apparatus for freezing food products
摘要:
Apparatus and method for freezing food products including a first freezer section utilizing a liquid or solid cryogen and a second freezer section which utilizes cryogenic vapor from the first freezer section to complete the freezing operation, the first and second freezer sections being in a vertical arrangement to minimize floor space and improve cooling efficiency.
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