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经营范围
发明名称
PLASTIC INTERNAL SCREEN
摘要
申请公布号
US3565251(A)
申请公布日期
1971.02.23
申请号
USD3565251
申请日期
1968.12.30
申请人
BLAW KNOX CO.
发明人
CHARLES S. PENNINGTON
分类号
B07B1/46;B07B1/54;(IPC1-7):B07B1/46;B07B1/50
主分类号
B07B1/46
代理机构
代理人
主权项
地址
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