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公开(公告)号：US3052058A
公开(公告)日：1962-09-04
申请号：US4002960
申请日：1960-06-30
Applicant: CAL DAK COMPANY
Inventor： WALSH FRANCIS J , MCGRAW CHARLES J
IPC: A47B91/04
CPC classification number: A47B91/04 , Y10T16/201
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公开(公告)号：US3106296A
公开(公告)日：1963-10-08
申请号：US14900961
申请日：1961-10-31
Applicant: CAL DAK COMPANY
Inventor： WALSH FRANCIS J , MCGRAW CHARLES J
IPC: A47B3/12
CPC classification number: A47B3/12
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