Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7253951 | Viewing device | — | 2007-08-07 |
| D518530 | Periscope toy | — | 2006-04-04 |
| D517636 | Toddler swing | Brian K. Zeilinger | 2006-03-21 |
| 6991550 | Climbing steps for playground structure | Brian K. Zeilinger, Christopher D. Boll | 2006-01-31 |
| 6419610 | Climbing wall | Kenneth J. Jonas, Randall C. Grutza | 2002-07-16 |
| 6193633 | Play structure climbing wall | Kenneth J. Jonas, Randall C. Grutza | 2001-02-27 |