Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7303547 | Interchangeable needle safety syringe | William B. S. Pressly, Sr., Charles A. Vaughn, Sr., Thomas R. Ellis | 2007-12-04 |
| 6605073 | Safety syringe | William B. S. Pressly, Sr., Charles A. Vaughn, Sr., Thomas R. Ellis | 2003-08-12 |
| 6074370 | Safety syringe | William B. S. Pressly, Sr., Charles A. Vaughn, Sr., Thomas R. Ellis | 2000-06-13 |
| 5800403 | Safety syringe | William B. S. Pressly, Sr., Charles A. Vaughn, Sr., Thomas R. Ellis | 1998-09-01 |
| 5613952 | Safety syringe | William B. S. Pressly, Sr., Charles A. Vaughn, Sr., Thomas R. Ellis | 1997-03-25 |