Keller; Leonard J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Keller; Leonard J..The latest application filed is for "devices and methods for utilization of intermittently available electric energy for heating and cooling of habitable structures".
- Keller; Leonard J. - Bonham TX
- Keller; Leonard J. - Dallas TX
- Keller; Leonard J. - Sarasota FL
| Patent | Date |
|---|---|
| Devices and methods for utilization of intermittently available electric energy for heating and cooling of habitable structures Grant 5,826,650 - Keller , et al. October 27, 1 | 1998-10-27 |
| Processes and means for waste resources utilization Grant 5,134,944 - Keller , et al. August 4, 1 | 1992-08-04 |
| Methacoal integrated combined cycle power plants Grant 4,953,479 - Keller , et al. September 4, 1 | 1990-09-04 |
| Fuel composition and method of manufacture Grant 4,045,092 - Keller August 30, 1 | 1977-08-30 |
| Method of preparing low-sulfur, low-ash fuel Grant 4,030,893 - Keller June 21, 1 | 1977-06-21 |
| Fluid Flow Device Having High Degree Of Flexibility Grant 3,807,912 - Keller April 30, 1 | 1974-04-30 |
| Prime Mover System Grant 3,750,393 - Minto , et al. August 7, 1 | 1973-08-07 |
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