Inventor

ZHANG CHUNNING

US2 patents

⚠️ This page may combine multiple inventors who share the name “ZHANG CHUNNING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

METROTECH CORP

1 patent

US10732313B2Aug 4, 2020

System and method for locating underground lines using motion based responsiveness

METROTECH CORP4 citations60

Vivax-Metrotech

1 patent

US9733379B2Aug 15, 2017

Line locator with a metal detector

Vivax-Metrotech0 citations27