Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7048094 | Extending ladder and associated manufacturing methods | Mitchell I. Kieffer, Craig S. Aizman | 2006-05-23 |
| 6883645 | Extending ladder and associated manufacturing methods | Mitchell I. Kieffer, Craig S. Aizman | 2005-04-26 |
| 6708800 | Extending ladder and associated manufacturing methods | Mitchell I. Kieffer, Craig S. Aizman | 2004-03-23 |