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公开(公告)号:BE884445A
公开(公告)日:1981-01-26
申请号:BE1009903
申请日:1980-07-24
Applicant: NORRIS INDUSTRIES
Inventor: DIETRICH H , FANE W J
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公开(公告)号:AU6044880A
公开(公告)日:1982-01-21
申请号:AU6044880
申请日:1980-07-16
Applicant: NORRIS INDUSTRIES
Inventor: DIETRICH H , FANE W J
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公开(公告)号:BE869268A
公开(公告)日:1979-01-26
申请号:BE1008995
申请日:1978-07-26
Applicant: NORRIS INDUSTRIES
Inventor: DIETRICH H , FANE W J , POTSCHKA J
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