Proprietà:Patent title
Titolo del brevetto (come riportato sullo stesso).
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Lead and crayon holder +
Explosive fountain pen +
Fountain pen +
Fountain pen +
Writing pen +
Fountain pen +
Stylographic Fountain-Pen +
Pen nib with spreader +
Fountain pen +
Writing instrument +
Writing equipment +
Fountain pen +
Writing instrument +
Ink reservoir and flow control +
Writing instrument +
Pen and pocket clip construction +
Fountain pen +
Fountain pen desk set +
Fountain pen +