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Facts about "Patent-US-2293621.pdf"
Application dateApril 16, 1940 +
Application number329958 +
Assigned toDavid Kahn Inc +
Invented byJohn William Para + and Julius Kahn +
Mention patentFile:Patent-US-2093919.pdf + and File:Patent-US-2203093.pdf +
Patent dateAugust 18, 1942 +
Patent descriptionMatita meccanica +
Patent number2293621 +
Patent titleMechanical pencil +
Patented byWearever +
Patented inUS +
Priority dateApril 16, 1940 +