Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D340069 | Pen cap | — | 1993-10-05 |
| 5176460 | Pen cap for a writing instrument barrel | — | 1993-01-05 |
| 4586714 | Puzzle game | Leon G. Lenkoff, Roger J. Lenkoff | 1986-05-06 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D340069 | Pen cap | — | 1993-10-05 |
| 5176460 | Pen cap for a writing instrument barrel | — | 1993-01-05 |
| 4586714 | Puzzle game | Leon G. Lenkoff, Roger J. Lenkoff | 1986-05-06 |