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公开(公告)号:US3473652A
公开(公告)日:1969-10-21
申请号:US3473652D
申请日:1968-06-26
Applicant: BEKAERT PVBA LEON
Inventor: VERSTRAETE MARCEL
CPC classification number: B21F33/002
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公开(公告)号:US3532281A
公开(公告)日:1970-10-06
申请号:US3532281D
申请日:1969-02-19
Applicant: BEKAERT PVBA LEON
Inventor: VERSTRAETE MARCEL
CPC classification number: B21C47/04 , B21F33/002 , Y10S242/918
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公开(公告)号:US3450360A
公开(公告)日:1969-06-17
申请号:US3450360D
申请日:1966-09-19
Applicant: BEKAERT PVBA LEON
Inventor: VERSTRAETE MARCEL
CPC classification number: B21C47/04 , B21F33/002 , Y10S242/918
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