Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331769 | Tinted spontaneous opal glass | Paul S. Danielson | 1982-05-25 |
| 4329400 | Glass article having a pattern formed in its surface and method | Joseph Ference, Hermann L. Rittler | 1982-05-11 |
| 4323653 | Inhibiting crystallization of opal glass compositions | Hans J. Holland | 1982-04-06 |
| 4311529 | Tinted opal glass | Paul S. Danielson | 1982-01-19 |