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Inventor

Edmond J. Helstab

Inventor
Ottawa, CA

Overview

12→
Patents
1989–2003
Patent span
Electricity
Primary field (CPC H)

Patents· 12 as inventor

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

H04Mprimary
H04MTelephonic communication50%
H04BTransmission25%
H04LTransmission of digital information, e.g. telegraphic communication25%
PatentTitleYear
6,542,586'Text messaging with embedded telephony action keys'20036,073,031'Desktop docking station for use with a wireless telephone handset'2000D0348458'Handheld telephone'1994D0307905'Base for a telephone set'1990D0306859'Add-on module for a homogeneous unit telephone set'1990D0303965'Base for telephone set'1989D0302977'Keyboard key arrangement'1989D0300490'Operator workstation'1989D0299985'Divider panel for an operator workstation or the like'1989D0299795'Divider panel for an operator workstation or the like'1989D0299794'Divider panel for an operator workstation or the like'1989D0299465'Housing for computer equipment'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1994Patents assigned to NORTHERN TELECOM LTD (10)· patent assignee history
1989–1994Based in Ottawa, CA· patent location history
2000Patents assigned to NORTEL NETWORKS CORP (1)· patent assignee history
2000–2003Based in Kanata, CA· patent location history
2003Patents assigned to NORTEL NETWORKS LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NORTHERN TELECOM LTD101989–1994
NORTEL NETWORKS CORP12000
NORTEL NETWORKS LTD12003
Locations
LocationPatentsSpan
Ottawa, CA101989–1994
Kanata, CA22000–2003