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经营范围
发明名称
Sealing and draft excluding device
摘要
申请公布号
US2146259(A)
申请公布日期
1939.02.07
申请号
US19360097855
申请日期
1936.08.25
申请人
MAX GRETENER
发明人
GRETENER MAX
分类号
E06B7/16
主分类号
E06B7/16
代理机构
代理人
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