Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4680947 | Interchangeable knitting needle system | Cornelius M. Phipps, Sr. | 1987-07-21 |
| 4632669 | Pressure indicating medical injection gun | Cornelius M. Phipps, Sr., Hal A. Phipps | 1986-12-30 |
| 4494387 | Interchangeable knitting needle system | Cornelius M. Phipps, Sr. | 1985-01-22 |
| 4306870 | Contact-actuated light pencil | — | 1981-12-22 |