Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866848 | Instrument for subdividing angles into halves, thirds or fifths | — | 1989-09-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866848 | Instrument for subdividing angles into halves, thirds or fifths | — | 1989-09-19 |