Expandable writing instrument
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 14, 2001
Grant Date -
N/A
app pub date -
Oct 16, 2000
filing date -
Oct 16, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An expandable pen has a pen barrel with an expanding middle section. The pen barrel holds a retractable ball point pen refill cartridge When the pen is expanded, the writing tip of the refill is extended from a retracted position inside the pen barrel to a writing position, while the barrel becomes full length for comfort when writing. The pen may be collapsed for storage, which simultaneously retracts the writing tip inside the pen barrel.
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Cited Art Landscape
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