发明名称 Film retriever
摘要 Device for retrieving the free end of a roll of film from a film cartridge; curved inner and outer jaws are movable with respect to one another. The operation involves inserting the jaw ends into the cartridge, rotating the film within the cartridge until the free end is between the jaw ends, and grasping the film with the jaw ends.
申请公布号 US4047653(A) 申请公布日期 1977.09.13
申请号 US19760660691 申请日期 1976.02.23
申请人 STARR, MICHAEL T. 发明人 STARR, MICHAEL T.
分类号 G03B17/30;(IPC1-7):G03B1/56 主分类号 G03B17/30
代理机构 代理人
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