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Inventor

Daniel L. Queen

Inventor
Chicago, IL, US

Overview

8→
Patents
1978–1994
Patent span
Electricity
Primary field (CPC H)

Patents· 8 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 transducers40%
H03GControl of amplification20%
G10LSpeech analysis techniques or speech synthesis10%
H01HElectric switches10%
H02HEmergency protective circuit arrangements10%
H04BTransmission10%
PatentTitleYear
5,359,158'Ceiling-mounted loudspeaker'19945,268,538'Hemispherically wide-radiating-angle loudspeaker system'1993D0341592'Ceiling-mounted loudspeaker'19934,287,391'Microphone assembly for speech recording using noise-adaptive output level control'19814,214,220'Wide range magnetically biased reed switch'19804,134,471'Narrow angle cylindrical wave full range loudspeaker system'19794,122,507'Loudspeaker overload circuit'19784,107,613'Wireless microphone with FM receiver muting system responsive to excessive undesired AM level or low AGC control level'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1980Patents assigned to CHAMBERLAIN MFG CORP (3)· patent assignee history
1978Patents assigned to PERMA POWER INC (1)· patent assignee history
1978–1981Based in Chicago, IL, US· patent location history
1981Patents assigned to RHR IND LTD (1)· patent assignee history
1993–1994Patents assigned to SONIC SYSTEMS INC (3)· patent assignee history
1993–1994Based in New York, NY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHAMBERLAIN MFG CORP31978–1980
SONIC SYSTEMS INC31993–1994
PERMA POWER INC11978
RHR IND LTD11981
Locations
LocationPatentsSpan
Chicago, Illinois, US51978–1981
New York, New York, US31993–1994