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发明名称
VARIABLE-SPEED FILM MOVEMENT MECHANISM
摘要
申请公布号
US3592373(A)
申请公布日期
1971.07.13
申请号
USD3592373
申请日期
1969.10.06
申请人
BELL & HOWELL CO.
发明人
RAYMOND W.H. KIM;ARTHUR E. NUPNAU
分类号
G03B19/18;(IPC1-7):G03B1/28
主分类号
G03B19/18
代理机构
代理人
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地址
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