Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5622644 | Mixed gas R-12 refrigeration apparatus | Richard Stevenson, Mikhail Boyarsky, Boris Yudin | 1997-04-22 |
| 5425890 | Substitute refrigerant for dichlorodifluoromethane refrigeration systems | Boris Yudin, Richard Stevenson, Mikhail Boyarsky | 1995-06-20 |