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公开(公告)号：US3389854A
公开(公告)日：1968-06-25
申请号：US60387266
申请日：1966-12-22
Applicant: H B IVES COMPANY
Inventor： LEO COOPERSMITH
IPC: A47G29/126
CPC classification number: A47G29/126 , Y10T16/551 , Y10T16/553
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