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发明名称
Pneumatic reproducing typewriting mechanisms
摘要
申请公布号
US1874512(A)
申请公布日期
1932.08.30
申请号
US19310551144
申请日期
1931.07.16
申请人
HALE HAROLD E;WATSON WILLIAM A
发明人
HALE HAROLD E.;WATSON WILLIAM A.
分类号
B41J3/50
主分类号
B41J3/50
代理机构
代理人
主权项
地址
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