Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D386789 | Educational toy | — | 1997-11-25 |
| 5663997 | Glass composition determination method and apparatus | Andrew L. Heilveil, Robert Dejaiffe | 1997-09-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D386789 | Educational toy | — | 1997-11-25 |
| 5663997 | Glass composition determination method and apparatus | Andrew L. Heilveil, Robert Dejaiffe | 1997-09-02 |