Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4653593 | Control method and control device for a down-the-hole rock drill | — | 1987-03-31 |
| 4496023 | Pneumatically operated impact tool | Anna M. Friedman | 1985-01-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4653593 | Control method and control device for a down-the-hole rock drill | — | 1987-03-31 |
| 4496023 | Pneumatically operated impact tool | Anna M. Friedman | 1985-01-29 |