LexDanaLexDanabeta
Inventor

Donald Cherry

Inventor
South Boston, VA, US

Overview

2→
Patents
2001–2017
Patent span
Electricity
Primary field (CPC H)

Patents· 2 as inventor

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

E21Bprimary
E21BEarth or rock drilling14%
H01BCables14%
H01FMagnets14%
H01GCapacitors14%
H01HElectric switches14%
H02KDynamo-electric machines14%
H05KPrinted circuits14%
PatentTitleYear
9,786,408'Renewable hydrocarbon based insulating fluid'20176,220,372'Apparatus for drilling lateral drainholes from a wellbore'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001Patents assigned to WENZEL DOWNHOLE TOOLS LTD (1)· patent assignee history
2001Based in Calgary, CA· patent location history
2017Patents assigned to ABB SCHWEIZ AG (1)· patent assignee history
2017Based in South Boston, VA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ABB SCHWEIZ AG12017
WENZEL DOWNHOLE TOOLS LTD12001
Locations
LocationPatentsSpan
South Boston, Virginia, US12017
Calgary, CA12001