Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4474172 | Solar water heating panel | — | 1984-10-02 |
| 4374095 | Method and apparatus for restraining radial flow catalytic reactor centerpipes | Douglas J. Legg | 1983-02-15 |
| 4273471 | Marine-drilling sub-base assembly for a soft-bottom foundation | — | 1981-06-16 |
| 4244922 | Hold-down device for vertically movable member in apparatus which contains contact material | Douglas J. Legg | 1981-01-13 |