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发明名称
Multicopy attachment for typewriters
摘要
申请公布号
US2069492(A)
申请公布日期
1937.02.02
申请号
US19320628281
申请日期
1932.08.11
申请人
LOUISE HENRY BEULAH
发明人
HENRY BEULAH LOUISE
分类号
B41J35/30
主分类号
B41J35/30
代理机构
代理人
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地址
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