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公开(公告)号：US1796552A
公开(公告)日：1931-03-17
申请号：US5145525
申请日：1925-08-20
Applicant: VICTOR TALKING MACHINE CO
Inventor： LUKER ARMER P
IPC: E05C17/28
CPC classification number: E05C17/28
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公开(公告)号：US1745306A
公开(公告)日：1930-01-28
申请号：US1067525
申请日：1925-02-20
Applicant: VICTOR TALKING MACHINE CO
Inventor： LUKER ARMER P
CPC classification number: A47B81/062 , A47B81/065 , H04B1/08
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