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公开(公告)号：US2856368A
公开(公告)日：1958-10-14
申请号：US46490654
申请日：1954-10-26
Applicant: SPECIALTIES DEV CORP
Inventor： RONALD MACINTYRE , SHEAKLEY LEONARD J , ZENOBIA JR JOHN C
IPC: H01C7/04
CPC classification number: H01C7/043
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