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公开(公告)号：US3031651A
公开(公告)日：1962-04-24
申请号：US73711658
申请日：1958-05-22
Applicant: LITTLE INC A
Inventor： LEO ROSEN , ROTHERY JOHN L
IPC: G11B5/00
CPC classification number: G11B5/00
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