Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4632717 | Method of making book style albums | Herbert Graetz | 1986-12-30 |
| 4555290 | Method of making cassette holders | Herbert Graetz | 1985-11-26 |
| 4432827 | Method of making cassette holders | Herbert Graetz | 1984-02-21 |
| 4407410 | Book type cassette holder and method of making same | Herbert Graetz | 1983-10-04 |