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发明名称
Handhole closure assembly
摘要
申请公布号
US3364952(A)
申请公布日期
1968.01.23
申请号
US19650463103
申请日期
1965.06.11
申请人
PFOFF AND KENDALL
发明人
SCAGLIONE MARIO A.;BRIDEN CHARLES RICHARD
分类号
E04H12/00;E04H12/24
主分类号
E04H12/00
代理机构
代理人
主权项
地址
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