Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830433 | Tower fan | Walter Birdsell, David L. Feer | 2004-12-14 |
| D489122 | Electric heater | Walter Birdsell, Mark E. Mnich, Michael J. Painter | 2004-04-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830433 | Tower fan | Walter Birdsell, David L. Feer | 2004-12-14 |
| D489122 | Electric heater | Walter Birdsell, Mark E. Mnich, Michael J. Painter | 2004-04-27 |