Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5573208 | Paper kite with frame | — | 1996-11-12 |
| 4364176 | Drawing appliance | Irving C. Dudley | 1982-12-21 |
| D265572 | Drawing instrument | David Bredemeier, William P. Richardson | 1982-07-27 |
| 4251920 | Drawing apparatus | — | 1981-02-24 |