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1.Device for producing cold at low temperatures and cold-gas refrigerator particularly suitable for use in such a device 失效
Title translation: 低温制冷装置及特别适用于这种装置的冷气冷冻机公开(公告)号:US3327486A
公开(公告)日:1967-06-27
申请号:US42691965
申请日:1965-01-21
Applicant: PHILIPS CORP
Inventor: LAURENS KOHLER JACOB WILLEM , AUGUST DROS ALBERT , RUDOLPHUS GEUNS JOHANNES , GIJSBERT PRAST
CPC classification number: F25J1/0276 , F25B9/14