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Facts about "Patent-US-2293622.pdf"
Application dateSeptember 10, 1940 +
Application number356235 +
Assigned toDavid Kahn Inc +
Invented byJohn William Para +
Mention patentFile:Patent-US-2293623.pdf +, File:Patent-US-2293621.pdf + and File:Patent-US-2312928.pdf +
Patent dateAugust 18, 1942 +
Patent descriptionMatita meccanica +
Patent number2293622 +
Patent titleMechanical pencil +
Patented byWearever +
Patented inUS +
Priority dateSeptember 10, 1940 +