发明名称 Electric page turner
摘要 This disclosure pertains to an arm adapted to be installed below a page in a book. The arm is secured to a shaft that is biased to urge the arm in a position which causes the page to be turned. A solenoid coil, operated by a battery and foot switch, releases the shaft allowing the bias means to turn the page. Spring clips carrying a frame are secured to the marginal edges of the book cover. The shaft, spring, and solenoid coil are carried by the frame.
申请公布号 US4084468(A) 申请公布日期 1978.04.18
申请号 US19760706139 申请日期 1976.07.19
申请人 BUTLER, FRANK M. 发明人 BUTLER, FRANK M.
分类号 B42D9/08;(IPC1-7):G10G7/00 主分类号 B42D9/08
代理机构 代理人
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