Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5908044 | Quadra-seal method and apparatus for operations upon fluid pressure containment bodies | John P. Kearns | 1999-06-01 |
| 5175973 | Compression repair method and apparatus | Richard Alwyn Owen, Richard C. Hanny | 1993-01-05 |
| 4709729 | Pipe weld repair device and method for the installation thereof | — | 1987-12-01 |
| 4607469 | Seal for water proofing a utility line conduit and a method of forming the seal | — | 1986-08-26 |
| 4576401 | Leak repair clamp | — | 1986-03-18 |
| 4568091 | Leak repair clamp with flexible lip seals | — | 1986-02-04 |
| 4529167 | Valve apparatus | Robert L. Holder, John P. Kearns | 1985-07-16 |
| 4520051 | Method of waterproofing a porous wall | — | 1985-05-28 |
| 4202377 | Pipe cleaning and plugging apparatus | — | 1980-05-13 |