US Patent
Patent No. US 10233665
Published on Mar 19, 2019
Application No. 15/990796
Filed on May 28, 2018
Priority Date -
Inventor/Applicants
Lee, Shu-Fang - Taoyuan, TW
Classification
International:4
E04H 15/18
E04H 15/40;
E04H 15/32;
E04H 15/64;
Examiner
2Dunn, David R
Jackson, Danielle