Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880453 | Method for making glass articles with defect-free surfaces and soluble glasses therefor | William H. Dumbaugh, Jr., William Paul Ryszytiwskyj | 1989-11-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880453 | Method for making glass articles with defect-free surfaces and soluble glasses therefor | William H. Dumbaugh, Jr., William Paul Ryszytiwskyj | 1989-11-14 |