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发明名称
Vernier mechanism
摘要
申请公布号
US2297744(A)
申请公布日期
1942.10.06
申请号
US19410391731
申请日期
1941.05.03
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
CARROLL FRED M.
分类号
B41F13/14
主分类号
B41F13/14
代理机构
代理人
主权项
地址
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