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公开(公告)号：US2625661A
公开(公告)日：1953-01-13
申请号：US16364950
申请日：1950-05-23
Applicant: PHILIPS LAB INC
Inventor： HAYDON ARTHUR W
CPC classification number: B64D15/12 , B64D15/14 , Y10T307/484 , Y10T307/76
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