Proprietà:Patent title
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Titolo del brevetto (come riportato sullo stesso).
P
Pencil holder +
Improvements in reservoir pens +
Improvements relating to polishing machines +
Improvements in or relating to fountain pens +
Improvements in the manufacture of pens +
Improvements in or relating to fountain or reservoir pens +
Improvements in or relating to fountain pens +
Improvements in or relating to fountain or reservoir pens +
Improvements in fountain or reservoir pens +
Improvements in pencil cases +
Improvements in or relating to fountain pens +
Improvements in fountain pens of the automatic filling type +
Improvements in and relating to ink bottles and the like +
Improvements in Reservoir Pens +
Improvements in or relating to fountain pens +
Improvements in or relating to Fountain Pens +
Improvements in Methods of Working Upon Surfaces of Ebonite and other Vulcanized Rubber Articles +
Improvements in or relating to fountain or reservoir pens +
Improvements in tools for poster writing +
Improvements in or relating to Fountain or Reservoir Pens +