Proprietà:Patent title

Titolo del brevetto (come riportato sullo stesso).

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Patent-GB-228672.pdf +

Improvements in or relating to fountain or reservoir pens +

Patent-GB-229928.pdf +

Improvements in or relating to fountain pens +

Patent-GB-232519.pdf +

Improvements in or relating to fountain or reservoir pens +

Patent-GB-235447.pdf +

Improvements in fountain or reservoir pens +

Patent-GB-236475.pdf +

Improvements in pencil cases +