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公开(公告)号：DE1578030A1
公开(公告)日：1969-11-13
申请号：DE1578030
申请日：1966-06-03
Applicant: NORRIS INDUSTRIES
Inventor： VINCENT CHOATE PAUL , BAILEY WEEKS CHARLES , ANTHONY SPINALE FRANK
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公开(公告)号：DE1678190A1
公开(公告)日：1972-02-03
申请号：DE1678190
申请日：1968-02-28
Applicant: NORRIS INDUSTRIES
Inventor： VINCENT CHOATE PAUL , ANTHONY SPINALE FRANK
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