Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5447179 | Non-corrosive double-walled steel tube characterized in that the steel has a face-centered cubic grain structure | Glen A. Gibbs | 1995-09-05 | $28,346,000 |
| 5297587 | Sealed double wall steel tubing having steel outer surface | — | 1994-03-29 | $17,800,000 |
| 5222652 | Non-corrosive double walled tube and process for making the same | Glen A. Gibbs | 1993-06-29 | $12,855,000 |
| 5145103 | Partial elimination of copper plate from steel strip by mechanical means | — | 1992-09-08 | |
| 5069381 | Non-corrosive double-walled tube and proces for making the same | Glen A. Gibbs | 1991-12-03 | $11,633,000 |