Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5087218 | Incandesent lamps and processes for making same | Frederic F. Ahlgren, John M. Davenport, Richard L. Hansler | 1992-02-11 |
| 5045748 | Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such | Frederic F. Ahlgren, John M. Davenport, Richard L. Hansler | 1991-09-03 |
| 4891555 | Metal vapor discharge lamps | Frederic F. Ahlgren, John M. Davenport, Richard L. Hansler | 1990-01-02 |
| 4810932 | Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such | Frederic F. Ahlgren, John M. Davenport, Richard L. Hansler | 1989-03-07 |
| 4808876 | Metal halide lamp | Park French, Mary B. Gotti, Gilbert H. Reiling | 1989-02-28 |
| 4267943 | Method and apparatus for handling and dispensing hygroscopic pellets | — | 1981-05-19 |
| 4253591 | Mercury doser | — | 1981-03-03 |
| 4254356 | Inlead and method of making a discharge lamp | — | 1981-03-03 |