Proprietà:Patent title
Titolo del brevetto (come riportato sullo stesso).
P
Improvements in art of manufacturing fountain pen caps and barrels +
Loose lead pencil holder +
Improvements in and relating to Fountain Pens +
Improvements in Reservoir Pens +
Improvements in and relating to Fountain Pens +
Improvements in Propelling Pencils +
Improvements in or relating to containers for liquid or semiliquid adhesives +
Porte-mine +
Improvements in or relating to Fountain Pens +
Improvements in Reservoir Pens +
Improvements in or relating to Fountain Pens +
Improvements in or relating to Fountain Pens +
Improvements in Fountain Pens +
Wechselschreibstift +
Improvements in or relating to Fountain Pens +
Improvements in or relating to Stylographic Pens or Ink Pencils +
Improvements in or relating to Fountain Pens +
Improvements in or relating to fountain pens +
Improvements in or in connection with show or display cards +
Improvements in or relating to fountain or reservoir pens +