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Inventor

Robert F. Kehrman

Inventor
Louisville, CO, US

Overview

1→
Patents
1981
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.

E21Fprimary
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels50%
G01BMeasuring length, thickness or similar linear dimensions50%
PatentTitleYear
4,271,407'Tunnel roof monitor employing an induction coil extensometer'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to WESTINGHOUSE ELECTRIC CORP (1)· patent assignee history
1981Based in Louisville, CO, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
WESTINGHOUSE ELECTRIC CORP11981
Locations
LocationPatentsSpan
Louisville, CO, US11981