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发明名称
Reversible dial
摘要
申请公布号
US2086697(A)
申请公布日期
1937.07.13
申请号
US19340753746
申请日期
1934.11.19
申请人
IRVING CAESAR
发明人
CAESAR IRVING
分类号
G01D13/04
主分类号
G01D13/04
代理机构
代理人
主权项
地址
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