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发明名称
Signaling system for material handling apparatus
摘要
申请公布号
US1833654(A)
申请公布日期
1931.11.24
申请号
US19250019699
申请日期
1925.03.31
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
MCMULLAN SAMUEL
分类号
B21C47/04
主分类号
B21C47/04
代理机构
代理人
主权项
地址
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