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GB2013581A
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Ball point writing instrument with a plastic writing tip and an ink conductor between the ball socket and the ink reservoir
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CH572815A5
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Ball point pen cartridge - has ink column enclosed by free piston to form pressurised gas chamber
|
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CH561609A5
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Ball point pen - has ink fed by compressed gas contained above the ink
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ES378796A1
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Cartridge for a writing implement
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FR1485773A
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Felt tip for stylograph
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FR1485772A
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Felt tip pen
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ES326524A1
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Improvements in useful script writers with felt. (Machine-translation by Google Translate, not legally binding)
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ES326523A1
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Improvements in users writers with felt. (Machine-translation by Google Translate, not legally binding)
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