Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D344608 | Heat-recuperating mask | Alexandr F. Goryachy, Ljudmila N. Rastorgueva, Yevgeny S. Petrashkin, Alexandr A. Semkov, Mikhail N. Dementiev +1 more | 1994-02-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D344608 | Heat-recuperating mask | Alexandr F. Goryachy, Ljudmila N. Rastorgueva, Yevgeny S. Petrashkin, Alexandr A. Semkov, Mikhail N. Dementiev +1 more | 1994-02-22 |