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Inventor

Arnold J. Farstad

Inventor
Boulder, CO, US

Overview

3→
Patents
1978–1999
Patent span
Physics
Primary field (CPC G)

Patents· 3 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 tunnels17%
G01BMeasuring length, thickness or similar linear dimensions17%
G08BSignalling systems, e.g. personal calling systems17%
G08CTransmission systems for measured values, control or similar signals17%
H04BTransmission17%
H04LTransmission of digital information, e.g. telegraphic communication17%
PatentTitleYear
5,907,281'Swimmer location monitor'19994,271,407'Tunnel roof monitor employing an induction coil extensometer'19814,090,135'Wireless FSK technique for telemetering underground data to the surface'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to US INTERIOR (1)· patent assignee history
1978–1999Based in Boulder, CO, US· patent location history
1981Patents assigned to WESTINGHOUSE ELECTRIC CORP (1)· patent assignee history
1999Patents assigned to JOHNSON ENGINEERING CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JOHNSON ENGINEERING CORP11999
US INTERIOR11978
WESTINGHOUSE ELECTRIC CORP11981
Locations
LocationPatentsSpan
Boulder, CO, US31978–1999