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Inventor

Alex M. Brzezinski

Inventor
Indianapolis, IN, US

Overview

4→
Patents
1976–1991
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers60%
H04MTelephonic communication20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
4,984,268'Telephone handset construction'19914,492,825'Electroacoustic transducer'19854,046,974'Electroacoustic transducer with springs forming electrical interconnections as a result of assembly'19773,958,662'Tensioned diaphragm mounting for an electroacoustic transducer'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1977Patents assigned to BELL TELEPHONE LABOR INC (2)· patent assignee history
1976–1991Based in Indianapolis, IN, US· patent location history
1985–1991Patents assigned to AT & T BELL LAB (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AT & T BELL LAB21985–1991
BELL TELEPHONE LABOR INC21976–1977
Locations
LocationPatentsSpan
Indianapolis, IN, US41976–1991