Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D479375 | Detail scraper | Donald Gringer | 2003-09-02 |
| D479374 | Two-handed scraper | Donald Gringer | 2003-09-02 |
| 6530098 | Multiple tool device | Donald Gringer | 2003-03-11 |
| 6487778 | Utility knife with pressure reducing slot | Donald Gringer | 2002-12-03 |
| D453251 | Wood scraper | Donald Gringer | 2002-01-29 |