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发明名称
Expansible shielding means
摘要
申请公布号
US3301140(A)
申请公布日期
1967.01.31
申请号
US19650452707
申请日期
1965.05.03
申请人
DUFF-NORTON COMPANY
发明人
BECK ROBERT J.
分类号
F15B15/26;F16J3/00
主分类号
F15B15/26
代理机构
代理人
主权项
地址
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