Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859344 | Method for underground support and removal of hazardous ions in ground waters | S. Ebow Coleman | 1989-08-22 |
| 4797159 | Expandable cement composition | — | 1989-01-10 |
LS
Lloyd Byron Spangle
Dowell Schlumberger Incorporated: 1 patents #3 of 36Top 9%
Overall (1989): #21,374 of 140,708Top 20%
2
Patents 1989