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公开(公告)号：US2990694A
公开(公告)日：1961-07-04
申请号：US74767658
申请日：1958-07-10
Applicant: FRANK BRUCE
Inventor： KUMMERLOWE CARL K , BATIE JOSEPH E
CPC classification number: F25B15/02 , F25B27/02 , Y02A30/274 , Y02B30/625
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