Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4316330 | Magnifying device for use with a triangular rule | — | 1982-02-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4316330 | Magnifying device for use with a triangular rule | — | 1982-02-23 |