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-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  +
Patent-US-2267147.pdf +
Process for manufacturing pen nibs  +
Patent-US-2272674.pdf +
Safety clasp  +
Patent-US-2274393.pdf +
Retaining clasp  +
Patent-US-2274470.pdf +
Fountain pen  +
Patent-US-2278907.pdf +
Fountain pen  +
Patent-US-2279803.pdf +
Security clip  +
Patent-US-2282840.pdf +
Fountain pen  +
Patent-US-2283333.pdf +
Fountain pen  +
Patent-US-2286878.pdf +
Adjustable eraser holder  +
Patent-US-2289963.pdf +
Fountain pen  +
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