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发明名称
ROTATABLE PROJECTION ASSEMBLY
摘要
申请公布号
US3520601(A)
申请公布日期
1970.07.14
申请号
USD3520601
申请日期
1967.02.23
申请人
RANK ORGANIZATION LTD.:THE
发明人
DONALD ABBOTT
分类号
G03B21/16;G03B21/20;(IPC1-7):G03B21/16
主分类号
G03B21/16
代理机构
代理人
主权项
地址
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