Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D684493 | Ball shaped squeezable whistle | Neil A. Castle, Paul Castle | 2013-06-18 |
| D654388 | Ball shaped squeezable whistle | Neil A. Castle, Paul Castle | 2012-02-21 |
| D626873 | Ball shaped squeezable whistle | Neil A. Castle, Paul Castle | 2010-11-09 |