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Mechanical pencil capable of automatically propelling...

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Mechanical pencil comprising a retractable lead guide

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Mechanical pencil with movable cylinder and lead-protecting...

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Mechanical pencil with sliding movable weight and lead...

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Mechanical writing instrument

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Mechanical writing instrument with a plurality of writing...

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Mechanically controlled writing apparatus with pre-sharpened...

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Mechanism for a writing instrument, writing instrument...

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Mechanism for extruding and retracting a writing member of a...

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Mechanism for writing instrument and writing instrument...

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Metallic ink composition for wick type writing instruments

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Method and apparatus for conducting machining operations

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Method and apparatus for extruding writing instruments

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Method and apparatus for securing nib in a writing instrument

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Method for controlling writing instruments

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Method for filling a cartridge with fluid and cartridge for...

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Method for filling a cartridge with fluid and system for...

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Method for forming a writing instrument with a compressible...

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Method for the production of waxy chalk

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Method of correcting typewritten impressions

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