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发明名称
Improvements in and relating to lapping machines, more especially for surfaces in high precision instruments
摘要
申请公布号
GB548415(A)
申请公布日期
1942.10.09
申请号
GB19400017083
申请日期
1940.11.29
申请人
SPERRY GYROSCOPE COMPANY INC.
发明人
分类号
B24B19/06
主分类号
B24B19/06
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