Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12419802 | Rollators with platforms for assisting a person to raise oneself | — | 2025-09-23 |
| 4988076 | Valves having a turnable closure member such as a butterfly valve | — | 1991-01-29 |
| 4898363 | Butterfly and ball valves | — | 1990-02-06 |
| 4560142 | Butterfly and ball valves | — | 1985-12-24 |
| 4491298 | Butterfly valve | David Colston Beauchamp | 1985-01-01 |
| 4271858 | Butterfly valve having temperature responsive sealing means | Christopher J. Snape | 1981-06-09 |