Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4403267 | Electrically heated vacuum furnace with a fault detection system | David A. Krieger | 1983-09-06 |
| 4214869 | Furnace with radiant burndown tube | Arvind C. Thekdi, Klaus H. Hemsath, James G. Conybear, Frank J. Vereecke | 1980-07-29 |