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-2472343.pdf +
Fountain pen  +
Patent-US-2473149.pdf +
Mechanical pencil with step-by-steplead feeding means  +
Patent-US-2473688.pdf +
Clip for writing instruments  +
Patent-US-2473689.pdf +
Clip for writing instruments  +
Patent-US-2473690.pdf +
Clip for writing instruments  +
Patent-US-2474996.pdf +
Fountain pen  +
Patent-US-2480014.pdf +
Changeable propelling pencil  +
Patent-US-2481874.pdf +
Ball-point writing instrument  +
Patent-US-2483329.pdf +
Writing instrument  +
Patent-US-2483603.pdf +
Fountain pen  +
Patent-US-2484640.pdf +
Mechanical pencil  +
Patent-US-2489463.pdf +
Stable blue writing ink and a dye therefor  +
Patent-US-2489983.pdf +
Fountain pen  +
Patent-US-2491082.pdf +
Fountain pen  +
Patent-US-2498384.pdf +
Fountain pen  +
Patent-US-2500833.pdf +
Fountain pen  +
Patent-US-2503043.pdf +
Pen desk set  +
Patent-US-2503061.pdf +
Pen desk set  +
Patent-US-2503080.pdf +
Mechanical pencil with push-button type lead feeding means  +
Patent-US-2504420.pdf +
Magazine pencil with rotary lead propelling means  +
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