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公开(公告)号：US2624483A
公开(公告)日：1953-01-06
申请号：US14454550
申请日：1950-02-16
Applicant: KETZEL EDWARD E
Inventor： KETZEL EDWARD E
CPC classification number: B62D63/064 , B62B3/104 , B62B2202/022
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