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US Patent 11939792 Underground shelter with air-intake system
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Patent
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Date Filed
August 12, 2021
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Date of Patent
March 26, 2024
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Patent Application Number
17400989
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Patent Citations
US Patent 8596018 Blast mitigation and ballistic protection system and components thereof
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US Patent 8776453 Easy-to-build modular steel storm shelter
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US Patent 8991134 Reconfigured modular building unit and method
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US Patent 9010230 Anti-ballistic shelters
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US Patent 9279265 Temporary shelter system
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US Patent 9316015 Shelter for protection against wind and blast events
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US Patent 10428541 Portable, protective shelter
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US Patent 9834947 Fire escape chamber with outer cage and inner cage
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US Patent 11384524 Below-grade modular assembly
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US Patent 7458305 Modular safe room
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•••
Patent Inventor Names
Ronal Hubbard
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Patent Jurisdiction
United States Patent and Trademark Office
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Patent Number
11939792
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Patent Primary Examiner
Kyle J. Walraed-Sullivan
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CPC Code
E04H 9/10
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E04H 9/08
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E04H 9/02
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E04H 9/024
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E04H 9/028
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E04H 9/04
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E04H 9/06
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E02D 29/045
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E04B 1/34869
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E04B 2001/1975
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