Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4786197 | Twist actuated writing instrument | Michael Theodore Lembeck | 1988-11-22 |
| 4257713 | Conical pen | Alan Sherman | 1981-03-24 |
| 4217712 | Conical pen | — | 1980-08-19 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4786197 | Twist actuated writing instrument | Michael Theodore Lembeck | 1988-11-22 |
| 4257713 | Conical pen | Alan Sherman | 1981-03-24 |
| 4217712 | Conical pen | — | 1980-08-19 |