Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9593868 | Horizontal ground-coupled heat exchanger for geothermal systems | Vladimir Entin, Irina Loktev | 2017-03-14 |
| 7288749 | Electrical heating device and method of its manufacture | Irina Loktev, Igor Isakovich Papirov | 2007-10-30 |