Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4277714 | Metal halide arc discharge lamp having coiled coil electrodes | William M. Keeffe, W. Calvin Gungle | 1981-07-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4277714 | Metal halide arc discharge lamp having coiled coil electrodes | William M. Keeffe, W. Calvin Gungle | 1981-07-07 |