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经营范围
发明名称
Reinforcing element
摘要
A reinforcing rod or wire is formed with a plurality of helical and longitudinally continuous grooves. At least one of these grooves is of varying width and/or depth, and similarly may have a varying cross-sectional shape.
申请公布号
US4308705(A)
申请公布日期
1982.01.05
申请号
US19790018889
申请日期
1979.03.09
申请人
HUFNAGL, WALTER
发明人
HUFNAGL, WALTER
分类号
E04C5/03;(IPC1-7):E04C3/30;D02G3/00
主分类号
E04C5/03
代理机构
代理人
主权项
地址
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