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发明名称
Retaining ring for dial covers and the like
摘要
申请公布号
US2496584(A)
申请公布日期
1950.02.07
申请号
US19460680628
申请日期
1946.07.01
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
GEIGER EDWARD F.;JOHNSON REYNOLD B.
分类号
G04B39/00
主分类号
G04B39/00
代理机构
代理人
主权项
地址
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