Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5307882 | Apparatus for feeding a drilling machine in extension rod drilling | — | 1994-05-03 |
| 5297642 | Apparatus for storing drill rods | Pauli Rajakallio, Jouko Kaakkurivaara, Leo Hakkinen, Pekka Koskelo | 1994-03-29 |