Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4683954 | Composition and method of stimulating subterranean formations | Michael L. Walker, William G. F. Ford, Walter R. Dill | 1987-08-04 |
| 4527628 | Method of temporarily plugging portions of a subterranean formation using a diverting agent | Walter R. Dill | 1985-07-09 |