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公开(公告)号：US3425023A
公开(公告)日：1969-01-28
申请号：US3425023D
申请日：1967-12-18
Applicant: ILLINOIS TOOL WORKS
Inventor： KROL HARRY J , RYDER FRANCIS E
CPC classification number: H01H85/201 , H01H85/2045
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