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公开(公告)号：US2713252A
公开(公告)日：1955-07-19
申请号：US28653652
申请日：1952-05-07
Applicant: LITTLE INC A
Inventor： JACKSON THOMAS S , SWANTON JR JOHN R
CPC classification number: F24D11/0221 , F24F3/001 , Y02B10/20 , Y02B10/70 , Y02B30/126
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