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发明名称
Means to vary the blow of the printing hammer
摘要
申请公布号
US1918300(A)
申请公布日期
1933.07.18
申请号
US19290399732
申请日期
1929.10.15
申请人
RALPH C. COXHEAD CORPORATION
发明人
TREGO FRANK H.
分类号
B41J7/92
主分类号
B41J7/92
代理机构
代理人
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