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公开(公告)号：US3526995A
公开(公告)日：1970-09-08
申请号：US3526995D
申请日：1969-02-03
Applicant: ROBERT M SAUNDERS
Inventor： SAUNDERS ROBERT M
CPC classification number: E05D15/0669 , E05Y2201/696 , E05Y2900/132 , Y10T16/364
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