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发明名称
Magnetisches Kodiergeraet mit mehreren Kodierscheiben, von denen sich eine langsamer dreht als die uebrigen
摘要
申请公布号
DE1299022(B)
申请公布日期
1969.07.10
申请号
DE1966G045646
申请日期
1966.01.05
申请人
GENERAL PRECISION INC.
发明人
JOHN BOSE, NORMAN
分类号
E21B41/00;G09C1/10;H03M1/00
主分类号
E21B41/00
代理机构
代理人
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