Proprietà:Patent title

Titolo del brevetto (come riportato sullo stesso).

Showing 20 pages using this property.
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Improvements in and relating to magazine lead pencils with selectively interchangeable lead holders  +
Improvements in or relating to stylographic pens  +
Improvements in or relating to self-filling fountain pens  +
Writing implement  +
Improvements in and relating to magazine lead pencils with selectively interchangeable lead holders  +
Improvements in or relating to fountain pens  +
Improvements in or relating to pencil holders  +
Improvements in or relating to propelling pencils  +
Improvements in self-filling fountain pens  +
Improvements in and relating to writing implement having interchangeable leads  +
Improvements relating to fountain pens  +
Improvements in or relating to self-filling fountain pens  +
Improvements in Fountain-pens  +
Closure for Ink Bottles  +
Improvements in or relating to fountain pens  +
Improvements relating to propelling pencils  +
Improvements in or relating to fountain pen barrels and the like  +
Improvements in or relating to fountain pens  +
Improvements in or relating to fountain pens, propelling pencils and the like  +
Improvements in and relating to fountain pens  +