Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33176 | Method for measuring density of a bulk material in a stockpile | David C. Cowherd, Jerry L. DeWitte, Kenneth A. Taylor, William C. Whitaker, Daniel S. Wolfe | 1990-03-06 |
| 4442701 | Method for measuring density of a bulk material in a stockpile | David C. Cowherd, Jerry L. DeWitte, Kenneth A. Taylor, William C. Whitaker, Daniel S. Wolfe | 1984-04-17 |