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发明名称
ENVELOPE CLOSURE
摘要
申请公布号
CA380502(A)
申请公布日期
1939.04.04
申请号
CAD380502
申请日期
申请人
VEREL C. ROSS
发明人
VEREL C. ROSS
分类号
主分类号
代理机构
代理人
主权项
地址
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