Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 28, 2019
Patent Application Number
15187332
Date Filed
June 20, 2016
Patent Citations Received
Patent Primary Examiner
Patent abstract
An article for extracting a viscous fluid from a vessel comprising a plurality of concentric annular ring portions; said ring portions connected in a stack with a series of grooves located in between them; said stack connected to a shaft; and an annular lid portion connected to said shaft.
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