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发明名称
Roof gutter protecting device
摘要
申请公布号
US2365845(A)
申请公布日期
1944.12.26
申请号
US19420463229
申请日期
1942.10.24
申请人
MARTIN SCHWEDA
发明人
SCHWEDA MARTIN
分类号
E04D13/076
主分类号
E04D13/076
代理机构
代理人
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