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Leadholder or Related Patent Thumbnail Index |
 http://leadholder.com/pat-us02242458-1940-gedess.html |
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date of application date granted inventor assignee patent holder country |
1940 March 29 (1939 April 9 in Switzerland) 1941 May 20 Georges Dessonnaz 1/2 Roger De Werra Switzerland |
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| patent employed on |
 Gedess Lead Pointer |
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