Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6149844 | Method of manufacturing composites | — | 2000-11-21 |
| 6126016 | Screening device and apparatus including same | — | 2000-10-03 |
| 5971667 | Apparatus for movement along an underground passage and method using same | — | 1999-10-26 |
| 5119770 | Multi-cylinder engines | Arthur Derrick Bray Graham, David William Jensen | 1992-06-09 |