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Facts about "Patent-GB-171154.pdf"
Application dateAugust 6, 1920 +
Application number23159/20 +
Assigned toWilliam Price De Witt +
Invented byWilliam P. De Witt +
Patent dateNovember 7, 1921 +
Patent descriptionMatita meccanica +
Patent number171154 +
Patent titleImprovements in pencil holders +
Patented byDe Witt-La France +
Patented inGB +
Priority dateApril 19, 1920 +
Same invention ofFile:Patent-US-1472962.pdf +, File:Patent-FR-526035.pdf + and File:Patent-DE-349147.pdf +