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发明名称
Closure and actuating mechanism therefor
摘要
申请公布号
US2227712(A)
申请公布日期
1941.01.07
申请号
US19370136771
申请日期
1937.04.14
申请人
HACKLEY ROY C
发明人
HACKLEY ROY C.
分类号
E04F21/12
主分类号
E04F21/12
代理机构
代理人
主权项
地址
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