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发明名称
Window construction
摘要
申请公布号
US2638640(A)
申请公布日期
1953.05.19
申请号
US19500153897
申请日期
1950.04.04
申请人
UNITED STATES GYPSUM COMPANY
发明人
BALLARD BERNARD T.
分类号
E06B3/34;E06B3/38
主分类号
E06B3/34
代理机构
代理人
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地址
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