Proprietà:Patent title
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Titolo del brevetto (come riportato sullo stesso).
P
Inlaid article and method of inlaying +
Fountain pen +
Writing instrument clip +
Method of manufacturing pen points, and sheet stock therefor +
Sheet stock and the manufacture of pen points +
Fountain pen identifying device +
Fountain pen +
Manufacture of metal stock +
Manufacture of writing pens +
Fountain pen barrel +
Interchangeable lead pencil +
Fountain pen +
Fountain pen +
Fountain pen +
Pencil eraser +
Improvements in stylographic fountain-pens +
Writing Pen +
Writing instrument +
Mechanical pencil +
Mechanical magazine pencil +