Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4912306 | Electric resistance heater | Frederick G. J. Grise, Paul H. Bodensiek | 1990-03-27 |
| 4849255 | Electric resistance heater | Frederick G. J. Grise, Paul H. Bodensiek | 1989-07-18 |