Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6564869 | Method and composition for cleaning and inhibiting solid, bitumin tar, and viscous fluid accretion in and on well equipment | John Ewanek | 2003-05-20 |
| 4258797 | Scraper blade undercarriage mounting assembly | Leo R. Tift | 1981-03-31 |