Proprietà:Patent title
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Titolo del brevetto (come riportato sullo stesso).
P
Improvements in or relating to Synthetic-Material Cartridges for Liquids +
Improvements in or relating to the Manufacture of Containers of Elongated Shape +
Improvements in self-filling fountain pen +
Improvements in or relating to Fountain Pens +
Improvements in reservoir writing, drawing or marking instruments +
Improvements in Fountain Pens +
Improvements in and relating to paper clips +
Improvements in or relating to Fountain and Stylographic Pens +
Improvements in Fountain or Reservoir Pens +
A New or Improved Means of Increasing the Life of Pen Nibs +
Improvements in and relating to ball-point pens +
Improvements in Self-filling Fountain Pens +
Improvements in and relating to a writing instruments +
Improvements in and relating to Fountain Pens +
Improvements in and relating to Fountain Pens +
Improvements in Stylographic Fountain Pens +
Improvements in and relating to Fountain Pen Clips +
Improvements in and relating to Self-filling Fountain Pens +
Improvements in or relating to Fountain Pens +
Improvements in or relating to fountain pens +