Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4636687 | Electrode alignment and capsule design for single-ended low wattage metal halide lamps | William M. Keeffe, Harold L. Rothwell, Jr., Zeya K. Krasko | 1987-01-13 |
| 4620130 | Electrode alignment and capsule design for single-ended low wattage metal halide lamps | William M. Keeffe, Harold L. Rothwell, Jr., Zeya K. Krasko | 1986-10-28 |
| 4390811 | High intensity discharge lamp including arc extinguishing means | Harold L. Rothwell, Jr., Alan Daignault | 1983-06-28 |
| 4383197 | Metal halide arc discharge lamp having shielded electrode | William M. Keeffe, Dale E. Work | 1983-05-10 |
| 4362969 | High intensity discharge lamp including arc extinguishing means | Harold L. Rothwell, Jr. | 1982-12-07 |
| 4320322 | Electrode geometry to improve arc stability | Harold L. Rothwell, Jr., William M. Keeffe | 1982-03-16 |
| 4308483 | High brightness, low wattage, high pressure, metal vapor discharge lamp | William M. Keeffe, Harold L. Rothwell, Jr., George J. English | 1981-12-29 |
| 4277714 | Metal halide arc discharge lamp having coiled coil electrodes | William M. Keeffe, Frederic Koury | 1981-07-07 |