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发明名称
Stress-gradient anchor
摘要
申请公布号
US3160988(A)
申请公布日期
1964.12.15
申请号
US19600076339
申请日期
1960.12.16
申请人
WILLIAMS CHESTER I
发明人
WILLIAMS CHESTER I.
分类号
E04B1/41;E04G11/28;E04G21/14
主分类号
E04B1/41
代理机构
代理人
主权项
地址
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