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Inventor

Lewis W. Barnum

Inventor
Tigard, OR, US

Overview

3→
Patents
1987–1996
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.

G04Gprimary
G04GElectronic time-pieces17%
G04RRadio-controlled time-pieces17%
G08BSignalling systems, e.g. personal calling systems17%
H04LTransmission of digital information, e.g. telegraphic communication17%
H04WWireless communication networks17%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use17%
PatentTitleYear
5,552,779'Watch pager with icons'19965,159,713'Watch pager and wrist antenna'19924,713,808'Watch pager system and communication protocol'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987Patents assigned to A T & E CORP (1)· patent assignee history
1987–1996Based in Tigard, OR, US· patent location history
1992–1996Patents assigned to SEIKO CORP (2)· patent assignee history
1992–1996Patents assigned to SEIKO EPSON CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO CORP21992–1996
SEIKO EPSON CORP21992–1996
A T & E CORP11987
Locations
LocationPatentsSpan
Tigard, OR, US31987–1996