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发明名称
Apparatus for scribing instruments
摘要
申请公布号
US2482743(A)
申请公布日期
1949.09.27
申请号
US19440553857
申请日期
1944.09.13
申请人
CHANFRAU RALPH P
发明人
CHANFRAU RALPH P.
分类号
B43L13/00
主分类号
B43L13/00
代理机构
代理人
主权项
地址
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