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公开(公告)号：US2532149A
公开(公告)日：1950-11-28
申请号：US77991647
申请日：1947-10-15
Applicant: CONE LORIS E
Inventor： CONE LORIS E
CPC classification number: B25B27/22 , B60B39/12 , B60C27/003
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