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发明名称
Roadway marking
摘要
申请公布号
US2187879(A)
申请公布日期
1940.01.23
申请号
US19380219667
申请日期
1938.07.16
申请人
JOHNSON THEODORE L
发明人
JOHNSON THEODORE L.
分类号
E01C23/18
主分类号
E01C23/18
代理机构
代理人
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