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公开(公告)号：US3071253A
公开(公告)日：1963-01-01
申请号：US66954157
申请日：1957-07-02
Applicant: CAL DAK COMPANY
Inventor： WALSH FRANCIS J , DUNBAR ROBERT H
IPC: A47G25/06
CPC classification number: A47G25/0664
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公开(公告)号：US2919809A
公开(公告)日：1960-01-05
申请号：US78163558
申请日：1958-12-19
Applicant: CAL DAK COMPANY INC
Inventor： DUNBAR ROBERT H
IPC: A47B7/02
CPC classification number: A47B7/02
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