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发明名称
Protractor for drafting machine
摘要
申请公布号
US3131478(A)
申请公布日期
1964.05.05
申请号
US19590828984
申请日期
1959.07.23
申请人
GLIDELINE CORPORATION
发明人
SNURR GORDON R.
分类号
B43L13/08
主分类号
B43L13/08
代理机构
代理人
主权项
地址
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