LexDanaLexDanabeta
Inventor

David James WILKIE

Inventor
GB

Overview

2→
Patents
2021–2022
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 2 as inventor

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

E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
11,332,993Cutting tool202211,193,344Fracturing tool2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021Patents assigned to SPEX CORP HOLDINGS LTD (1)· patent assignee history
2021–2022Based in GB· patent location history
2022Patents assigned to SPEX CORPORATE HOLDINGS LTD (1)· patent assignee history
2022Patents assigned to SPEX ENGINEERING UK LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SPEX CORP HOLDINGS LTD12021
SPEX CORPORATE HOLDINGS LTD12022
SPEX ENGINEERING UK LTD12022
Locations
LocationPatentsSpan
GB22021–2022