Proprietà:Patent title

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Titolo del brevetto (come riportato sullo stesso).

precedenti 202050100250500successivi 20
Showing 20 pages using this property.
P
Patent-US-2163515.pdf +
Interchangeable lead pencil  +
Patent-US-2167815.pdf +
Fountain pen  +
Patent-US-2170242.pdf +
Fountain pen  +
Patent-US-2176661.pdf +
Fountain pen  +
Patent-US-2177466.pdf +
Pencil eraser  +
Patent-US-217888.pdf +
Improvements in stylographic fountain-pens  +
Patent-US-2179727.pdf +
Writing Pen  +
Patent-US-2180560.pdf +
Writing instrument  +
Patent-US-2186027.pdf +
Mechanical pencil  +
Patent-US-2186869.pdf +
Mechanical magazine pencil  +
Patent-US-2186870.pdf +
Mechanical pencil  +
Patent-US-2187528.pdf +
Fountain pen  +
Patent-US-2188662.pdf +
Fountain pen  +
Patent-US-2189696.pdf +
Stylographic pen  +
Patent-US-2200042.pdf +
Fountain pen  +
Patent-US-2203093.pdf +
Mechanical pencil  +
Patent-US-2208460.pdf +
Pen point and method of making the same  +
Patent-US-2213931.pdf +
Penholder  +
Patent-US-2215630.pdf +
Reservoir desk stand  +
Patent-US-2216780.pdf +
Mechanical pencil  +
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