Lead for writing, drawing and painting utensils
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United States of America Patent
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Issued Date -
Aug 31, 2006
app pub date -
Jan 26, 2006
filing date -
Jan 26, 2005
priority date (Note) -
Abandoned
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Abstract
A lead for writing, drawing and painting utensils has a colorant lead core and at least one lead coat extending in the direction of the longitudinal axis. The at least one lead coat envelopes the lead core as seen in cross section of the lead and the lead coat and lead core are immovably mounted relative to each other. The at least one lead coat has a higher bending strength than the lead core.
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