Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5411095 | Apparatus for cementing a casing string | Jeffry C. Ehlinger | 1995-05-02 |
| 5234052 | Cementing apparatus | Malcolm G. Coone | 1993-08-10 |
| 5024273 | Cementing apparatus and method | Malcolm G. Coone, Jeffry C. Ehlinger | 1991-06-18 |
| 4514266 | Method and apparatus for electroplating | Henry Hahn | 1985-04-30 |