Stephen Hart

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Atlanta, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Nonrotating pivotable solar panel
- Patent number 6,552,257
- Issue date Apr 22, 2003
- American Signal Company
- Stephen P. Hart
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Optic lens cell and illuminated signage having a cell array
- Patent number 6,244,727
- Issue date Jun 12, 2001
- American Signal Company
- Patrick H. Ryan
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Power manager system for highway signage
- Patent number 6,028,597
- Issue date Feb 22, 2000
- American Signal Company
- Patrick Henry Ryan
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Removable trailer tongue
- Patent number 6,027,134
- Issue date Feb 22, 2000
- American Signal Company
- Stephen P. Hart
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Display apparatus for signage
- Patent number 5,793,343
- Issue date Aug 11, 1998
- American Signal Company
- Stephen P. Hart
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Power supply system for continuously energizing a D.C. load
- Patent number 5,159,259
- Issue date Oct 27, 1992
- American Signal Company
- Stephen Hart
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM AND METHOD FOR REMOTE MONITORING OF THE ORIENTATION OF A MES...
- Publication number 20140039837
- Publication date Feb 6, 2014
- Stephen P. Hart
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
NONROTATING PIVOTABLE SOLAR PANEL
- Publication number 20030070704
- Publication date Apr 17, 2003
- Stephen P. Hart
- F24 - HEATING RANGES VENTILATING