Revision history of "File:Patent-US-1694945.pdf"

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Fatti riguardanti Patent-US-1694945.pdf
Application dateottobre 25, 1925 +
Application number60230 +
Assigned toKeeran Products Company +
Invented byCharles R. Keeran +
Patent datedicembre 11, 1928 +
Patent descriptionMatita meccanica +
Patent number1694945 +
Patent titleMechanical pencil +
Patented byUnbranded +
Patented inUS +
Priority dateottobre 25, 1925 +