LexDanaLexDanabeta
Inventor

Runan Zhang

Inventor
Hunan, CN

Overview

1→
Patents
2021
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 1 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
10,975,628Drill bit nozzle and drill bit2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021Patents assigned to SEED TECH CORP LTD (1)· patent assignee history
2021Based in Hunan, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEED TECH CORP LTD12021
Locations
LocationPatentsSpan
Hunan, CN12021