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公开(公告)号：US1881033A
公开(公告)日：1932-10-04
申请号：US43339730
申请日：1930-03-05
Applicant: GEORGE A SMITH TURNTABLE CORP
Inventor： SMITH GEORGE A
IPC: B60S13/02
CPC classification number: B60S13/02
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公开(公告)号：US1977864A
公开(公告)日：1934-10-23
申请号：US53816131
申请日：1931-05-18
Applicant: GEORGE A SMITH TURNTABLE CORP
Inventor： SMITH GEORGE A
IPC: B60S13/02
CPC classification number: B60S13/02
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