Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446337 | Formation of tube slots in clad aluminum materials | Richard A. Lempner | 2002-09-10 |
| 5947196 | Heat exchanger having manifold formed of stamped sheet material | Frank E. Tegel | 1999-09-07 |
| 4279113 | Coin guard for coin protection | — | 1981-07-21 |