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经营范围
发明名称
LENS-CHANGING SYSTEM
摘要
申请公布号
US3589804(A)
申请公布日期
1971.06.29
申请号
USD3589804
申请日期
1969.07.02
申请人
BELL & HOWELL CO.
发明人
JOHN K. TAILLON;LONIAL D. BOEN
分类号
G03B19/18;G03B31/02;(IPC1-7):G03B3/00
主分类号
G03B19/18
代理机构
代理人
主权项
地址
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