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公开(公告)号：US2743665A
公开(公告)日：1956-05-01
申请号：US28571652
申请日：1952-05-02
Applicant: MCGRAW ELECTRIC CO
Inventor： GUSTAFSON DAVID A
IPC: A47J37/06
CPC classification number: A47J37/0611
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公开(公告)号：US2620426A
公开(公告)日：1952-12-02
申请号：US11395049
申请日：1949-09-03
Applicant: MCGRAW ELECTRIC CO
Inventor： GUSTAFSON DAVID A
IPC: A47J37/08
CPC classification number: A47J37/08
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