Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4254556 | Portable drafting device for drawing parallel lines, comprising a working plane of flexible plastic material, adapted to be rolled | — | 1981-03-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4254556 | Portable drafting device for drawing parallel lines, comprising a working plane of flexible plastic material, adapted to be rolled | — | 1981-03-10 |