Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5325624 | Electronic fly population control apparatus | R. H. Richardson | 1994-07-05 |
| 5205785 | Control system for the ventilating means in a poultry building or the like | R. H. Richardson | 1993-04-27 |