Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4435053 | Three-dimensional plural display apparatus | Gregory J. Walz | 1984-03-06 |
| 4294523 | Three-dimensional display apparatus | Gregory J. Walz, Robert O. Kretzschmar | 1981-10-13 |