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发明名称
Protective device for poles
摘要
申请公布号
US1982569(A)
申请公布日期
1934.11.27
申请号
US19330664627
申请日期
1933.04.05
申请人
BYRD ARTHER J
发明人
BYRD ARTHER J.
分类号
E04H12/22
主分类号
E04H12/22
代理机构
代理人
主权项
地址
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