Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349973 | Pop-ups and methods of making | John K. Volkert | 1982-09-21 |
| 4337589 | Method of making hinged pop-up items | John K. Volkert, Robert B. Volkert | 1982-07-06 |
| 4336664 | Promotional puzzle | John K. Volkert | 1982-06-29 |
| 4313270 | Item with pivoting pop-up | John K. Volkert, Robert B. Volkert | 1982-02-02 |