Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885700 | Computer-controlled method and apparatus for making bingo cards | Henry Klein | 1989-12-05 |
| 4882688 | Computer-controlled method and apparatus for making bingo cards | Henry Klein | 1989-11-21 |