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发明名称
Signal system
摘要
申请公布号
US1830498(A)
申请公布日期
1931.11.03
申请号
US19290417271
申请日期
1929.12.30
申请人
WOOD WILLIAM H;CROUSE IRA W
发明人
WOOD WILLIAM H.;CROUSE IRA W.
分类号
B61L1/18
主分类号
B61L1/18
代理机构
代理人
主权项
地址
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