Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9541097 | Hub assembly for a large cooling fan | — | 2017-01-10 |
| 8956124 | Safety retaining system for large industrial fan | Walter K. Boyd | 2015-02-17 |
| 8579588 | Hub assembly for a large cooling fan | — | 2013-11-12 |
| 8556592 | Safety retaining system for large industrial fan | Walter K. Boyd | 2013-10-15 |
| 7955055 | Safety retaining system for large industrial fan | Walter K. Boyd | 2011-06-07 |