Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4925495 | Washing apparatus and method | William Crisp, Melvyn Engel, Judson Smith | 1990-05-15 |
| 4817651 | Hand and forearm cleansing apparatus | William Crisp, Judson Smith | 1989-04-04 |