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公开(公告)号:MX145028A
公开(公告)日:1981-12-15
申请号:MX17294478
申请日:1978-03-31
Applicant: NORRIS INDUSTRIES
Inventor: BEISCH HANS ROBERT , APCZYNKI FREDERICK ANTHONY , CILLESPIE JAMES EDWARD
IPC: B60B7/06 , B60B7/04 , B60B7/18