American District Telegraph Company

Organization

Jersey City, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Optical block in smoke detectors
- Patent number 4,584,485
- Issue date Apr 22, 1986
- American District Telegraph Company
- Robert B. Powers
- G08 - SIGNALLING
Information Patent Grant
Forward scatter smoke detector
- Patent number RE32105
- Issue date Apr 1, 1986
- American District Telegraph Company
- Robert B. Enemark
- 340 - Communications: electrical
Information Patent Grant
Photoelectric smoke detector
- Patent number D279872
- Issue date Jul 30, 1985
- American District Telegraph Company
- Hugh P. Thornton
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Smoke detector
- Patent number D279769
- Issue date Jul 23, 1985
- American District Telegraph Company
- Hugh P. Thornton
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Smoke detector with remote alarm indication
- Patent number 4,517,555
- Issue date May 14, 1985
- American District Telegraph Co.
- Angelo A. Marsocci
- G08 - SIGNALLING
Information Patent Grant
Moving wall test device in optical smoke detectors
- Patent number 4,488,049
- Issue date Dec 11, 1984
- American District Telegraph Company
- Angelo A. Marsocci
- G08 - SIGNALLING
Information Patent Grant
Local control apparatus for central station alarm system
- Patent number 4,459,582
- Issue date Jul 10, 1984
- American District Telegraph Company
- Robert F. Sheahan
- G08 - SIGNALLING
Information Patent Grant
Forward scatter smoke detector
- Patent number 4,430,646
- Issue date Feb 7, 1984
- American District Telegraph Company
- Robert B. Enemark
- G01 - MEASURING TESTING
Information Patent Grant
Local control apparatus for central station alarm system
- Patent number 4,427,974
- Issue date Jan 24, 1984
- American District Telegraph Company
- Robert F. Sheahan
- G08 - SIGNALLING
Information Patent Grant
Multidirectional mount for electrical instruments
- Patent number 4,424,553
- Issue date Jan 3, 1984
- American District Telegraph Company
- Angelo A. Marsocci
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Smoke detector
- Patent number D271671
- Issue date Dec 6, 1983
- American District Telegraph Company
- Hugh P. Thornton
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Freight car identification method
- Patent number 4,264,927
- Issue date Apr 28, 1981
- American District Telegraph Company
- Andre Raymond
- B61 - RAILWAYS
Information Patent Grant
Power line signalling system
- Patent number 4,245,215
- Issue date Jan 13, 1981
- American District Telegraph Company
- Lorne D. O'Connor
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical particle detector
- Patent number 4,242,673
- Issue date Dec 30, 1980
- American District Telegraph Company
- Glenn F. Cooper
- G08 - SIGNALLING
Information Patent Grant
Electrical test circuit for optical particle detector
- Patent number 4,232,307
- Issue date Nov 4, 1980
- American District Telegraph Company
- Angelo A. Marsocci
- G08 - SIGNALLING
Information Patent Grant
Dual alarm gas detector
- Patent number 4,219,806
- Issue date Aug 26, 1980
- American District Telegraph Company
- Robert B. Enemark
- G08 - SIGNALLING
Information Patent Grant
Optical smoke detector
- Patent number 4,206,366
- Issue date Jun 3, 1980
- American District Telegraph Co.
- Angelo A. Marsocci
- G08 - SIGNALLING
Information Patent Grant
Latching alarm smoke detector
- Patent number 4,193,069
- Issue date Mar 11, 1980
- American District Telegraph Company
- Glenn F. Cooper
- G08 - SIGNALLING
Information Patent Grant
Secondary light testing in optical smoke detectors
- Patent number 4,166,698
- Issue date Sep 4, 1979
- American District Telegraph Company
- Donald F. Steele
- G08 - SIGNALLING
Information Patent Grant
Variable frequency light pulser for smoke detectors
- Patent number 4,163,969
- Issue date Aug 7, 1979
- American District Telegraph Company
- Robert B. Enemark
- G08 - SIGNALLING
Information Patent Grant
Battery discriminator circuit for smoke detectors
- Patent number 4,149,162
- Issue date Apr 10, 1979
- American District Telegraph Company
- Robert B. Enemark
- G08 - SIGNALLING
Information Patent Grant
Fire protection calculator
- Patent number 4,124,795
- Issue date Nov 7, 1978
- American District Telegraph Company
- Joseph LiCalsi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Central station system including secondary communication path estab...
- Patent number 4,119,815
- Issue date Oct 10, 1978
- American District Telegraph Company
- Eric J. Frankfort
- G08 - SIGNALLING
Information Patent Grant
Connector for reed switches
- Patent number 4,118,098
- Issue date Oct 3, 1978
- American District Telegraph Corporation
- James L. Swift
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Central station system transmission apparatus
- Patent number 4,068,105
- Issue date Jan 10, 1978
- American District Telegraph Company
- Prem Prakash Jain
- G08 - SIGNALLING
Information Patent Grant
Fluid flow detector for a fire alarm system
- Patent number 4,051,467
- Issue date Sep 27, 1977
- American District Telegraph Company
- Aaron A. Galvin
- G08 - SIGNALLING
Information Patent Grant
Pilferage detection systems
- Patent number 3,983,552
- Issue date Sep 28, 1976
- American District Telegraph Company
- Paul E. Bakeman
- G08 - SIGNALLING

American District Telegraph Company

Organization

Patents Grantslast 30 patents

Optical block in smoke detectors

Forward scatter smoke detector

Photoelectric smoke detector

Smoke detector

Smoke detector with remote alarm indication

Moving wall test device in optical smoke detectors

Local control apparatus for central station alarm system

Forward scatter smoke detector

Local control apparatus for central station alarm system

Multidirectional mount for electrical instruments

Smoke detector

Freight car identification method

Power line signalling system

Optical particle detector

Electrical test circuit for optical particle detector

Dual alarm gas detector

Optical smoke detector

Latching alarm smoke detector

Secondary light testing in optical smoke detectors

Variable frequency light pulser for smoke detectors

Battery discriminator circuit for smoke detectors

Fire protection calculator

Central station system including secondary communication path estab...

Connector for reed switches

Central station system transmission apparatus

Fluid flow detector for a fire alarm system

Pilferage detection systems

Patents Applicationslast 30 patents

Trademarklast 30 trademarks