Proprietà:Patent title
Titolo del brevetto (come riportato sullo stesso).
P
Desk pen holder +
Method for forming tubes of celluloid and the like +
Fountain pen +
Writing, drawing, or ruling pen +
Plunger type pen +
Plunger type pen +
Plunger type pen +
Plunger type pen +
Fountain pen clip +
Fountain pen +
Mechanical pencil +
Point and feed section of fountain pens +
Fountain pen construction +
Reservoir fountain pen +
Fountain pen +
Coated cellulosic plastic +
Fountain pen +
Soluble ink fountain pen +
Writing Pen +
Writing implement +