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ELECTRO SIGNAL LAB, INC., A CORP. OF DE
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PARSIPPANY, NJ, US
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Patents Grants
last 30 patents
Information
Patent Grant
Battery powered smoke detector
Patent number
4,186,390
Issue date
Jan 29, 1980
Electro Signal Lab, Inc.
Robert B. Enemark
G08 - SIGNALLING
Information
Patent Grant
Optical smoke detector inlet screen
Patent number
4,124,298
Issue date
Nov 7, 1978
Electro Signal Lab, Inc.
Donald F. Steele
G08 - SIGNALLING
Information
Patent Grant
LED smoke detector circuit
Patent number
4,025,915
Issue date
May 24, 1977
Electro Signal Lab, Inc.
Robert B. Enemark
G08 - SIGNALLING
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73030316 - ESL
Serial number
73030316
Registration number
1017350
Filing date
Aug 23, 1974
ELECTRO SIGNAL LAB, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
72428774 - ESL
Serial number
72428774
Registration number
990034
Filing date
Jun 29, 1972
ELECTRO SIGNAL LAB, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments