Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4332620 | Colored paving composition | — | 1982-06-01 |
| 4327283 | Workpiece with machine-readable marking recessed therein and method of making same | Philip M. Heyman | 1982-04-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4332620 | Colored paving composition | — | 1982-06-01 |
| 4327283 | Workpiece with machine-readable marking recessed therein and method of making same | Philip M. Heyman | 1982-04-27 |