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Inventor

Gerard Theroue

Inventor
Brossard, CA

Overview

1→
Patents
1988
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 drilling50%
G01BMeasuring length, thickness or similar linear dimensions50%
PatentTitleYear
4,719,803'Borehole extensometer for monitoring relative mass displacements'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988Patents assigned to ROCTEST LTEE LTD (1)· patent assignee history
1988Based in Brossard, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ROCTEST LTEE LTD11988
Locations
LocationPatentsSpan
Brossard, CA11988