Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6418644 | Apparatus and method for padding the ground below a duct using excavated soils, equipment for compacting soil below a duct, and a soil-compacting mechanism | Alexandr V. Bykov, Andrei B. Koval, Alexandr S. Kumylganov, Jury B. Leichenko, Jury M. Mamontov +5 more | 2002-07-16 |
| 6418646 | Machine for digging into the lower layers of the ground | Alexandr V. Bykov, Andrei B. Koval, Alexandr S. Kumylganov, Efim A. Kushnir, Jury M. Mamontov +4 more | 2002-07-16 |