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发明名称
Signaling system
摘要
申请公布号
US2365719(A)
申请公布日期
1944.12.26
申请号
US19400350623
申请日期
1940.08.03
申请人
AMERICAN DISTRICT TELEGRAPH COMPANY
发明人
MUEHTER MANFRED W.
分类号
G07C1/20;G08B19/00
主分类号
G07C1/20
代理机构
代理人
主权项
地址
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