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公开(公告)号：US3035145A
公开(公告)日：1962-05-15
申请号：US85016859
申请日：1959-11-02
Applicant: JOHN METZGER , W H ANDERSON
Inventor： RUDOLPH ROBERT R
IPC: F24F6/12
CPC classification number: F24F6/12 , Y10S261/34
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