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JPS5983699A
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Pencil of mechanism which push writing end against paper surface and eject lead
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JPS58136498A
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Note using liquid crystal ink
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JPS5882795A
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Propelling pencil
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JPS5825999A
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Protective structure of extremely thin plastic pen by slide pipe
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JPS5822200A
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Regulating mechanism for quantity of pen point projected of extremely thin marking pen
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JPS5812798A
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Note, amount of pen point thereof projected is kept constant
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JPS57169395A
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Locking device for lead in propelling pencil
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JPS578199A
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Locking device for lead in propelling pencil
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JPS55105589A
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Pen point and method of producing same
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JPS564494A
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Ball receiving shaft of balllpoint pen and its preparation
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JPS564493A
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Pen point of balllpoint pen and its preparation
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JPS55105590A
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Ball point pen
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JPS55105591A
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Ball point pen
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US4065215A
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Writing instrument
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