Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 28, 2019
Patent Application Number
15866430
Date Filed
January 9, 2018
Patent Citations Received
Patent Primary Examiner
Patent abstract
A writing instrument may include an upper pen barrel rotatably connected to a lower pen barrel. A spool valve and fluid reservoirs may be housed in the upper pen barrel. A writing tip secured to the lower pen barrel may be in selective fluid communication with the fluid reservoirs. The upper pen barrel may be rotatable relative to the lower pen barrel of the writing instrument.
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