Proprietà:Patent title
Titolo del brevetto (come riportato sullo stesso).
P
Self-filling Fountain Pen +
Improved Manufacture of Writing Inks +
Improvements in, or relating to, Fountain Pens +
Improvements in or relating to Fountain Pens +
Improvements in or relating to Fountain or Reservoir Pens +
Improvements in and relating to twin fountain pens +
Improvements in or relating to pencil holders +
Improvements in and relating to Ink Wells and in particular Ink Wells suitable for use with Self-filling Fountain Pens +
Improvements in or relating to Pencils +
Improvements in or relating to Reservoir Pens +
Improvements in or relating to pencils +
Improvements in or relating to fountain pens +
Improvements in or relating to Writing Points or Nibs +
Improvements in or relating to Fountain or Reservoir Pens +
Improvements in fountain pens +
Fountain pen +
Improvements in or relating to Fountain Pens +
Improvements in or relating to fountain pens +
Improvements in or relating to Retaining Means for Fountain Pens, Propelling Pencils, and the like in Garment Pockets +
Improvements in or relating to mechanically operated lead pencils +