Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581338 | Escapable area well cover | Richard D. Lintel | 2003-06-24 |
| 5597505 | Hole form apparatus | Donald H. Koenig | 1997-01-28 |
| 4235761 | Water-insoluble thermoplastic compositions for rigidly holding or supporting articles during machining | — | 1980-11-25 |