Refillable ink pen
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 21, 1996
Grant Date -
N/A
app pub date -
Mar 18, 1994
filing date -
Apr 15, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A refillable pen having a writing reservoir for supplying a writing tip with ink and an additional supply reservoir for refilling the writing reservoir by operating a first valve. The additional supply reservoir is refilled from outside of the pen through a second valve by an accompanying refill container. The accompanying refill container has an injection needle with a valve and a wall of the refill container forms bellows for increasing the pressure on the liquid inside the refill container.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully