Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5976377 | System and method for the reduction of the biological oxygen demand level of a flowable waste water | James Randall McKennon | 1999-11-02 |
| 4862733 | Method and apparatus for detecting leaks in a liquid-containing tank | Richard A. Ellis, Reg W. McCulloch | 1989-09-05 |
| 4781057 | Method and apparatus for detecting leaks in a liquid-containing tank | Richard A. Ellis, Reg W. McCulloch | 1988-11-01 |