Proprietà:Patent title

Titolo del brevetto (come riportato sullo stesso).

Showing 20 pages using this property.
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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  +