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Automatic lead advance for mechanical pencils

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Automatic lead advancing mechanism for a mechanical pencil

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
Patent

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Continuous feed mechanical pencil with push button lead feed act

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Mechanical pencil

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Mechanical pencil with automatic lead advance

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Mechanical pencil with automatic lead advance

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Mechanical pencil with automatic lead advance

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Mechanical pencil with automatic lead feed

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Mechanical pencil with removable lead feed cover

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Self-feeding mechanical pencil

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Writing implement with automatic lead projection

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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Writing instrument for automatic advancement and feed of leads

Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to limit tool projection
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