File:US962688-0 Automatic Bell Ringer 2.png

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US Patent 962688 "Automatic bell-ringer" Figure 2.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	22:55, 6 April 2014		1,606 × 2,558 (363 KB)	Dnevil (talk \| contribs)	US Patent 962688 "Automatic bell-ringer" Figure 2.

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