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-2229749.pdf +
Fountain pen  +
Patent-US-2232231.pdf +
Tip for a marking instrument  +
Patent-US-2233846.pdf +
Fountain pen  +
Patent-US-2236720.pdf +
Tip for mechanical pencils or the like  +
Patent-US-2237155.pdf +
Clip and cap structure for fountain pens  +
Patent-US-2239526.pdf +
Reversible eraser tip  +
Patent-US-2241203.pdf +
Apparatus for making pencil leads  +
Patent-US-2241846.pdf +
Receptacle for liquids  +
Patent-US-2241850.pdf +
Pressure bar for fountain pens  +
Patent-US-2241852.pdf +
Receptacle for fountain pens  +
Patent-US-2241865.pdf +
Fountain pen  +
Patent-US-2249004.pdf +
Method of and apparatus for treating thermoplastic tubes  +
Patent-US-2249616.pdf +
Reservoir desk stand  +
Patent-US-2252907.pdf +
Fountain pen  +
Patent-US-2254975.pdf +
Material for pen tips  +
Patent-US-2255093.pdf +
Fountain pen  +
Patent-US-2258030.pdf +
Ink container  +
Patent-US-2258841.pdf +
Writing instrument  +
Patent-US-2260571.pdf +
Fountain pen  +
Patent-US-2263299.pdf +
Fountain pen  +
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