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发明名称
Drawing device
摘要
申请公布号
US1970035(A)
申请公布日期
1934.08.14
申请号
US19320591310
申请日期
1932.02.06
申请人
SAUL ROBINSON
发明人
ENRIGHT ROBERT B.
分类号
B43L13/18
主分类号
B43L13/18
代理机构
代理人
主权项
地址
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