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Display titleFile:Patent-US-1905920.pdf
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Page ID7450
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Page creatorPiccardi (talk | contribs)
Date of page creation18:34, 14 July 2012
Latest editorPiccardi (talk | contribs)
Date of latest edit00:26, 23 August 2013
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Fatti riguardanti Patent-US-1905920.pdf
Application datefebbraio 24, 1931 +
Application number515898 +
Assigned toW. A. Sheaffer Pen Company +
Invented byWilliam H. Lindemon +
Patent dateaprile 25, 1933 +
Patent descriptionMatita per combo +
Patent number1905920 +
Patent titleMechanical pencil +
Patented byW. A. Sheaffer Pen Company +
Patented inUS +
Priority datefebbraio 24, 1931 +