Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4327806 | Offset driver accessory | — | 1982-05-04 |
| 4312604 | Friction rock stabilizer set, and a method of fixing a friction rock stabilizer in an earth structure bore | Chuen-Cheng Fu | 1982-01-26 |