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公开(公告)号：US3377123A
公开(公告)日：1968-04-09
申请号：US52472266
申请日：1966-02-03
Applicant: GEORGE JOSEPH WILLIAM LEESON
Inventor： WILLIAM LEESON GEORGE JOSEPH
IPC: A47L1/08
CPC classification number: A47L1/08
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