Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5918219 | System and method for estimating construction project costs and schedules based on historical data | — | 1999-06-29 |
| 5246287 | Colloidal grout mixing apparatus and method | Gary Christian, Timothy J. Wearden | 1993-09-21 |
| 4398493 | Coating of solids | John E. Gillett, Richard A. Hann, Philip Norton-Berry, Margaret L. Steel | 1983-08-16 |
| 4318941 | Coating of solids | John E. Gillett, Richard A. Hann, Philip Norton-Berry, Margaret L. Steel | 1982-03-09 |