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公开(公告)号:US3508741A
公开(公告)日:1970-04-28
申请号:US3508741D
申请日:1968-09-04
Applicant: BEKAERT PVBA LEON
Inventor: STEENHOUDT JAN
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公开(公告)号:DE1911473A1
公开(公告)日:1969-11-27
申请号:DE1911473
申请日:1969-03-06
Applicant: BEKAERT PVBA LEON
Inventor: STEENHOUDT JAN
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公开(公告)号:CA869512A
公开(公告)日:1971-04-27
申请号:CA869512D
Applicant: BEKAERT PVBA LEON
Inventor: STEENHOUDT JAN
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