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Display titleFile:Patent-US-2504420.pdf
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Page creatorPiccardi (talk | contribs)
Date of page creation19:02, 6 August 2012
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Fatti riguardanti Patent-US-2504420.pdf
Application datemarzo 31, 1947 +
Application number739276 +
Assigned toThe Parker Pen Company +
Invented byPhilip C. Hull + e George W. Gilman +
Mention patentFile:Patent-US-1621990.pdf +, File:Patent-US-1864038.pdf + e File:Patent-US-2116136.pdf +
Patent dateaprile 18, 1950 +
Patent descriptionMatita meccanica +
Patent number2504420 +
Patent titleMagazine pencil with rotary lead propelling means +
Patented byThe Parker Pen Company +
Patented inUS +
Priority datemarzo 31, 1947 +