Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5020860 | Methods and apparatus for maintaining longwall face alignment | Michael G. Nelson | 1991-06-04 |
| 5013091 | Method of indirect measurement of cowl position on a longwall shearer | Michael G. Nelson | 1991-05-07 |
| 4981327 | Method and apparatus for sensing coal-rock interface | Michael G. Nelson | 1991-01-01 |
| 4884847 | Apparatus and method for mapping entry conditions in remote mining systems | Michael G. Nelson | 1989-12-05 |