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Inventor

John G. Engstrom

Inventor
Indianapolis, IN, US

Overview

6→
Patents
1976–1988
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 6 as inventor

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

E05Bprimary
E05BLocks33%
H04MTelephonic communication33%
LOCD133%
PatentTitleYear
D0297325'Telephone stand'19884,587,517'Intrusion sensing device'1986D0282358'Telecommunications system console or similar article'1986D0280896'Portable transmitter'1985D0252331'Telephone stand'19793,941,951'Telephone stand'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to BELL TELEPHONE LABOR INC (1)· patent assignee history
1976–1988Based in Indianapolis, IN, US· patent location history
1985Patents assigned to AT & T BELL LAB (1)· patent assignee history
1986Patents assigned to AT & T TECHNOLOGIES INC (1)· patent assignee history
1986Patents assigned to AT&T INFORMATION SYSTEMS INC (1)· patent assignee history
1988Patents assigned to AMERICAN TELEPHONE & TELEGRAPH COMPANY AT&T INFORMATION SYSTEMS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AMERICAN TELEPHONE & TELEGRAPH COMPANY AT&T INFORMATION SYSTEMS11988
AT & T BELL LAB11985
AT & T TECHNOLOGIES INC11986
AT&T INFORMATION SYSTEMS INC11986
BELL TELEPHONE LABOR INC11976
Locations
LocationPatentsSpan
Indianapolis, IN, US61976–1988