US Patent
Patent No. US 11060254
Published on Jul 13, 2021
Application No. 16/676226
Filed on Nov 6, 2019
Priority Date -
Inventor/Applicants
Kirn, Steven K. - Portland, OR US
Classification
International:2
E01F 13/00
E01F 13/02;
Examiner
2Will, Thomas B
Chu, Katherine J