Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5012621 | Lift shaft apparatus | Leslie Power | 1991-05-07 |
| 4986040 | Modular elevator shaft | Leslie Power | 1991-01-22 |
| 4986041 | Prefabricated elevator shaft modules | Leslie Power | 1991-01-22 |
| 4291499 | Propagation of plants | — | 1981-09-29 |