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Elenco dei risultati
- File:Patent-GB-607060.pdf + (Improvements in and relating to fountain pens)
- File:Patent-GB-612868.pdf + (Improvements in and relating to fountain pens, propelling pencils and like writing instruments)
- File:Patent-GB-573545.pdf + (Improvements in and relating to immersion testing apparatus)
- File:Patent-GB-238288.pdf + (Improvements in and relating to ink bottles and the like)
- File:Patent-GB-474736.pdf + (Improvements in and relating to magazine lead pencils with selectively interchangeable lead holders)
- File:Patent-GB-478118.pdf + (Improvements in and relating to magazine lead pencils with selectively interchangeable lead holders)
- File:Patent-GB-1058094.pdf + (Improvements in and relating to paper clips)
- File:Patent-GB-212564.pdf + (Improvements in and relating to pen-holders)
- File:Patent-GB-182234.pdf + (Improvements in and relating to propelling actions or devices for pencil holders)
- File:Patent-GB-598726.pdf + (Improvements in and relating to self-filling fountain pens)
- File:Patent-GB-151753.pdf + (Improvements in and relating to the filling of fountain pens)
- File:Patent-GB-397736.pdf + (Improvements in and relating to twin fountain pens)
- File:Patent-GB-482097.pdf + (Improvements in and relating to writing implement having interchangeable leads)
- File:Patent-GB-265005.pdf + (Improvements in art of manufacturing fountain pen caps and barrels)
- File:Patent-GB-570091.pdf + (Improvements in flow testing apparatus)
- File:Patent-GB-151844.pdf + (Improvements in fountain and other reservoir pens)
- File:Patent-GB-235447.pdf + (Improvements in fountain or reservoir pens)
- File:Patent-GB-334913.pdf + (Improvements in fountain pen)
- File:Patent-US-174965.pdf + (Improvements in fountain pen)
- File:Patent-GB-708633.pdf + (Improvements in fountain pens)
- File:Patent-GB-352184.pdf + (Improvements in fountain pens)