Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Andrew Jones0
Heiner Ophardt0
Zhenchun Shi0
Date of Patent
May 7, 2024
0Patent Application Number
177296500
Date Filed
April 26, 2022
0Patent Citations
...
Patent Primary Examiner
Patent abstract
A piston pump for dispensing fluid from a reservoir, an improved vacuum relief arrangement in which a passageway for flow of air from the atmosphere into the reservoir is provided at least in part through a piston-forming element of the piston pump.
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