LexDanaLexDanabeta
Inventor

Douglas DERR

Inventor
US

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
11,136,857Rapid response well control assembly2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021Patents assigned to HALLIBURTON ENERGY SERVICES INC (1)· patent assignee history
2021Based in US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HALLIBURTON ENERGY SERVICES INC12021
Locations
LocationPatentsSpan
US12021