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公开(公告)号：US1049308A
公开(公告)日：1912-12-31
申请号：US1911617173
申请日：1911-03-27
Applicant: JULIUS E PYLES , WILHELMINA KLEIN , KLEIN CHRISTIAN F , PYLES EDWARD A
Inventor： KLEIN CHRISTIAN F , PYLES EDWARD A
CPC classification number: G08B25/12
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