Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499180 | Device for heating a wiper blade | George P. Johnson | 2002-12-31 |
| 5987302 | On-line essay evaluation system | Gary Driscoll, Lou A. Hatfield, Helen D. Kahn, Theodore E. Kessler, David L. Kuntz +3 more | 1999-11-16 |