Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7670033 | Fire stop for light fixture | Peter James Tonge, John Valentine | 2010-03-02 |
| 5110413 | Intumescent sheet material | — | 1992-05-05 |
| 4337863 | Process for the concentration of fibrous material | Alan W. Atkinson | 1982-07-06 |