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发明名称
Curtain wall frame construction
摘要
申请公布号
US3218768(A)
申请公布日期
1965.11.23
申请号
US19620214404
申请日期
1962.08.02
申请人
ENGHOLM RAYMOND A
发明人
ENGHOLM RAYMOND A.
分类号
E04B2/96
主分类号
E04B2/96
代理机构
代理人
主权项
地址
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POWDERED SUBSTANCE
Apparatus for measuring, recording, and controlling dilute dust concentrations
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