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发明名称
Seal
摘要
申请公布号
US1762961(A)
申请公布日期
1930.06.10
申请号
US19290331873
申请日期
1929.01.11
申请人
THE INTERNATIONAL SEAL AND KNOT PROTECTOR CO.
发明人
DESSAUER NORMAN
分类号
G09F3/03
主分类号
G09F3/03
代理机构
代理人
主权项
地址
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