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Leadholder or Related Patent Thumbnail Index |
direct link http://www.leadholder.com/pat-us02188130-1939-fedra_point.html |
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date of application date granted inventor assignee patent holder country |
1939 June 26 1940 January 23 Georg Baier and Georg Köppel – Germany |
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This design is the forerunner of the mechanism used in the Alvin 5000 and 5555 lead pointers. The Alvin pointers use a much simpler version of this design, but retain the distinctive blade assembly shown in this patent.   
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| © 2001 to 2008 Dennis B. Smith |
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