Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854148 | Cold drawing technique and apparatus for forming internally grooved tubes | — | 1989-08-08 |
| 4747431 | Integral joint forming of work-hardenable high alloy tubing | Dale F. LaCount, Richard L. Holbrook, Kurt J. Kahlow, deceased | 1988-05-31 |
| 4649728 | Integral joint forming of work-hardenable high alloy tubing | Dale F. LaCount, Richard L. Holbrook, Kurt J. Kahlow, deceased | 1987-03-17 |
| 4538337 | Method of mechanically prestressing a tubular apparatus | Richard L. Holbrook | 1985-09-03 |
| 4470188 | Method of mechanically prestressing a tubular apparatus | Richard L. Holbrook | 1984-09-11 |