Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4257354 | Means for adjusting heights of nipple waterers | Mark S. Mittelberg | 1981-03-24 |
| 4249461 | Ventilating system for a livestock building | Larry E. Christenson, Rick W. Dripps, Mark S. Mittleberg | 1981-02-10 |