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发明名称
Acoustical construction
摘要
申请公布号
US2077889(A)
申请公布日期
1937.04.20
申请号
US19360062739
申请日期
1936.02.07
申请人
JACOB MAZER
发明人
MAZER JACOB
分类号
E04B1/74;E04B1/82;E04B1/84
主分类号
E04B1/74
代理机构
代理人
主权项
地址
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