Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848480 | Method and apparatus for wire line protection in a well | Paul Titchener, Merle E. Hanson | 1989-07-18 |
| 4828051 | Method and apparatus for data transmission in a well using a flexible line with stiffener | Paul Titchener | 1989-05-09 |