Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6406215 | Positive connection between a pipe and a ring inserted into the pipe | Gerhard Balve | 2002-06-18 |
| 6371220 | Pneumatically reversible ram drilling tool | Alfons Hesse | 2002-04-16 |
| 6364036 | Automatic rod assembly | — | 2002-04-02 |
| 6352128 | Steered-head ram drilling tool | — | 2002-03-05 |
| 6340270 | Apparatus and method for the longitudinal splitting of pipes laid underground | — | 2002-01-22 |