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发明名称
Ultrasonic lens generators
摘要
申请公布号
US2939252(A)
申请公布日期
1960.06.07
申请号
US19570638116
申请日期
1957.02.04
申请人
AMERICAN OPTICAL COMPANY
发明人
COOKE FRANK
分类号
B23Q1/54;B23Q11/08;B24B1/04;B24B13/02
主分类号
B23Q1/54
代理机构
代理人
主权项
地址
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