Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833913 | Sample having coated perforations intended to be examined under the microscope and its preparation process, particularly for printed circuit boards | — | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833913 | Sample having coated perforations intended to be examined under the microscope and its preparation process, particularly for printed circuit boards | — | 1989-05-30 |