Leonard J. Keller

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Bonham, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Devices and methods for utilization of intermittently available ele...
- Patent number 5,826,650
- Issue date Oct 27, 1998
- Leonard J. Keller
- F24 - HEATING RANGES VENTILATING
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Processes and means for waste resources utilization
- Patent number 5,134,944
- Issue date Aug 4, 1992
- Leonard J. Keller
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Grant
Methacoal integrated combined cycle power plants
- Patent number 4,953,479
- Issue date Sep 4, 1990
- Leonard J. Keller
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Methods for reducing nitrogen oxides emissions from power plants fi...
- Patent number 4,742,784
- Issue date May 10, 1988
- Austin N. Stanton
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...