Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330703 | Layered self-regulating heating article | David A. Horsma, Robert Smith-Johannsen | 1982-05-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330703 | Layered self-regulating heating article | David A. Horsma, Robert Smith-Johannsen | 1982-05-18 |