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公开(公告)号：US3538537A
公开(公告)日：1970-11-10
申请号：US3538537D
申请日：1969-01-23
Applicant: LEOPOLD STRAUSS
Inventor： STRAUSS LEOPOLD
CPC classification number: E05F3/06 , E05Y2900/132 , Y10T16/281
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