Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4555994 | Boiler-heating assembly with oil- and coal-fired ignition burners | Karl G. Voigt, John Norbert | 1985-12-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4555994 | Boiler-heating assembly with oil- and coal-fired ignition burners | Karl G. Voigt, John Norbert | 1985-12-03 |