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Writing instrument
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Writing instrument
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Writing instrument
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Clip for writing instruments and the like
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Retraction-protraction mechanism for writing instruments
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Instruments having a retractable member at both ends of said instrument
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Ballpoint cartridge units
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Protraction-retraction mechanism for writing instruments
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Mechanical pencil
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Protraction-retraction mechanism for writing instruments
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Retractable double ended pen mechanism
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Projectable clip for writing instruments
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Retractable ball-point pen
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Retraction-protraction mechanism for writing instruments
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Writing instrument
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