RETRACTABLE WRITING UTENSIL HAVING AN AIRTIGHT VALVE
A writing utensil having a distal end and a proximal end and extending generally along a longitudinal axis includes a casing having a slot extending generally along the longitudinal axis adjacent the proximal end, an eraser disposed on the proximal end of the casing, a valve coupled to the casing ad...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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