Proprietà:Patent title
Titolo del brevetto (come riportato sullo stesso).
P
Fountain pen +
Fountain pen +
Pen desk set +
Decorative tubular article of pyroxylin or the like +
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 +