Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5278473 | Method of despensing mercury into arc dishcharge lamp having capsule coated with low ionization energy material | Ralph P. Parks, Jr., Dennis D. Spaulding | 1994-01-11 |
| 4843279 | Fluorescent lamp substantially approximating the ultraviolet spectrum of natural sunlight | Leo J. Plante | 1989-06-27 |
| 4703224 | Fluorescent lamp substantially approximating the ultraviolet spectrum of natural sunlight | Leo J. Plante | 1987-10-27 |
| 4420709 | Fluorescent lamp employing means for controlling emission of short wavelength ultraviolet radiation | — | 1983-12-13 |