Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6104602 | Compact electrical equipment enclosure | Robert A. Morris, Charles Pitzen, Michael C. von Kannewurff | 2000-08-15 |
| 4846279 | Method and means for introducing treatment fluid into a well bore | — | 1989-07-11 |
| 4790386 | Method and means for introducing treatment composition into a well bore | Irvin D. Johnson | 1988-12-13 |
| 4430728 | Computer terminal security system | James E. Beitel, Gary R. Cook, Charles F. Mosier, Jr., Edward L. Sartore | 1984-02-07 |
| 4390836 | Method and apparatus for the detection of pipeline holidays | Irvin D. Johnson | 1983-06-28 |
| 4373815 | Method and apparatus for measuring leaks in liquid storage vessels | — | 1983-02-15 |