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US Patent 11841087 Watertight check valve
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Patent
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Date Filed
January 27, 2023
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Date of Patent
December 12, 2023
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Patent Application Number
18102466
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Patent Citations
US Patent 8991415 Fire hydrant break off valve
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US Patent 9347573 Check valve with reduced opening speed
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US Patent 9353878 Dual plate backflow and breakaway check valve
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US Patent 9581256 Valve flapper spring stop mechanism
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US Patent 9890866 Hydrant shear valve and method
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US Patent 10228070 Check valves
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US Patent 10407882 Hydrant shear valve and method
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US Patent 10539244 Check valve
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US Patent 10578224 Check valves
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US Patent 10612690 Check valves
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•••
Patent Inventor Names
Sean Michael Allen
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Christopher Joseph Duckett
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Justin Blaine Childress
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Patent Jurisdiction
United States Patent and Trademark Office
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Patent Number
11841087
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Patent Primary Examiner
Kevin F Murphy
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CPC Code
E03B 9/04
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F16L 55/1007
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F16K 2200/402
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F16K 15/038
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F16K 17/363
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Y10T 137/7875
0
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