Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285689 | Piping inspection instrument carriage with precise and repeatable position control and location determination | Ted R. Talarek, W. Thor Zollinger, Frank M. Heckendorn, Larry R. Park | 1994-02-15 |
| 5018451 | Extendable pipe crawler | — | 1991-05-28 |