Patents per Year
Top Inventors at Crutcher Resources All Time
Showing 1–12 of 12 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Robert G. Goekler | 4 |
| 2 | Lionel H. Wheeler | 3 |
| 2 | Talbert D. Connell | 3 |
| #4 | Floyd M. Thompson | 2 |
| #5 | Charles W. Hunt | 1 |
| #5 | Daniel LÜDDEKE | 1 |
| #5 | Eugene F. Sims | 1 |
| #5 | Gary N. King | 1 |
| #5 | Jerome W. Nelson | 1 |
| #5 | Morris T. Covington | 1 |
| #5 | Forrest N. LaRue | 1 |
| #5 | Harold DePriest | 1 |
Most Valuable Patents
| Patent | Est. Value | Year |
|---|---|---|
| Method of outside welding of pipelines | $2M | 1981 |
| Liquid pipeline leak detection | $2M | 1982 |
| Quick-change brush head | $2M | 1980 |
| Pivotal back-up pads for welding | $2M | 1980 |
| Piling removal | $1M | 1983 |