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Inventor

Duane Francis Wald

Inventor
Plymouth, MN, US

Overview

1→
Patents
1998
Patent span
Electricity
Primary field (CPC H)

Patents· 1 as inventor

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

H04Mprimary
H04MTelephonic communication100%
PatentTitleYear
5,815,567'Communications interface providing isolation and ringdown features'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998Patents assigned to MULTI TECH SYSTEMS INC (1)· patent assignee history
1998Based in Plymouth, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MULTI TECH SYSTEMS INC11998
Locations
LocationPatentsSpan
Plymouth, Minnesota, US11998