Inventor

John R. Welk

Inventor
Addison, IL, US

Overview

6→
Patents
1984–1998
Patent span
Electricity
Primary field (CPC H)

Patents· 6 as inventor

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

G09Gprimary
G09GArrangements or circuits for control of indicating devices using static means to present variable information33%
H04BTransmission22%
G02BOptical elements, systems or apparatus11%
H04NPictorial communication, e.g. television11%
H04QSelecting11%
H04WWireless communication networks11%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1998Patents assigned to MOTOROLA INC (6)· patent assignee history
1984–1998Based in Addison, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MOTOROLA INC61984–1998
Locations
LocationPatentsSpan
Addison, Illinois, US61984–1998