Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4188813 | Method and machine for the manufacture of long concrete drills provided with helical splines over part of their length | James Mansion | 1980-02-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4188813 | Method and machine for the manufacture of long concrete drills provided with helical splines over part of their length | James Mansion | 1980-02-19 |