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US 2021/0387470 A1Published application
Pen with multiple colors
AssigneeSociete BIC
InventorsDavid Michael DUFFY, Bernadette ELLIOTT-BOWMAN
Life of this patent
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Abstract
A writing instrument, in particular a pen, comprising at least two reservoirs for storing colorants or inks of at least two different colors, characterized by at least one pumping means which is designed to be actuated by at least one finger of a user.
Claims20
A writing instrument, comprising at least two reservoirs for storing colorants or inks of at least two different colors,
- characterized by at least one pumping means which is designed to be actuated by at least one finger of a user.
A writing instrument comprising at least two reservoirs for storing colorants or inks of at least two different colors,
- characterized by at least one pumping means which is designed to increase the pressure in the reservoirs, wherein the writing instrument is a pen.
Dependencies are inferred from the claim text.