US Patent
Patent No. US 11689657
Published on Jun 27, 2023
Application No. 17/670851
Filed on Feb 14, 2022
Priority Date -
Inventor/Applicants
Liu, Zhishen - Campbell, CA US
Classification
International:4
H04L 12/16
H04M 3/42;
H04M 7/00;
H04L 41/5051;
Examiner
Nguyen, Phuongchau Ba