Energy efficient soundproofing window retrofits | Patent Number 11749247

US 11749247 B2
Application Number17507491
Publication NumberUS 20220223130 A1
Pendency1 year, 10 months, 19 days
Filled DateOct 21, 2021
Priority DateApr 25, 2018
Publication DateJul 14, 2022
Expiration DateApr 24, 2038
Inventor/ApplicantsXuanhe Zhao
Elise M. Strobach
Lee A. Weinstein
Sungwoo Yang
Bikramjit S. Bhatia
Lin Zhao
Gang Chen
Thomas A. Cooper
Evelyn N. Wang
Shaoting Lin
ExaminesMULVANEY, ELIZABETH EVANS
Art Unit1785
Technology Center1700
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