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Facts about "Patent-US-2504420.pdf"
Application dateMarch 31, 1947 +
Application number739276 +
Assigned toThe Parker Pen Company +
Invented byPhilip C. Hull + and George W. Gilman +
Mention patentFile:Patent-US-1621990.pdf +, File:Patent-US-1864038.pdf + and File:Patent-US-2116136.pdf +
Patent dateApril 18, 1950 +
Patent descriptionMatita meccanica +
Patent number2504420 +
Patent titleMagazine pencil with rotary lead propelling means +
Patented byThe Parker Pen Company +
Patented inUS +
Priority dateMarch 31, 1947 +