Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11795760 | Ladder tripod assembly and system | Allen A. Caldwell | 2023-10-24 |
| 11174678 | Locking assembly for a telescoping ladder | Nathan L. Schlueter | 2021-11-16 |
| 10995547 | Telescoping ladder with a cascading collapse mechanism | Nathan L. Schlueter | 2021-05-04 |
| 10753149 | Extendable / retractable ladder | Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker | 2020-08-25 |
| 10731413 | Foldable ladder | Nathan L. Schlueter, Allen A. Caldwell | 2020-08-04 |
| 10233692 | Foldable ladder | Nathan L. Schlueter, Allen A. Caldwell | 2019-03-19 |
| 10053912 | Extendable / retractable ladder | Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker | 2018-08-21 |
| 9580959 | Foldable ladder | Nathan L. Schlueter, Allen A. Caldwell | 2017-02-28 |
| D767784 | Hinge for a telescoping stepladder | Nathan L. Schlueter, Allen A. Caldwell | 2016-09-27 |
| 9416591 | Telescoping ladder with stabilizers | Allen A. Caldwell | 2016-08-16 |
| D684278 | Collapsible five legged stepstool | John Pat McCool, Allen A. Caldwell, Matthew J. Decker, Matthew Kunkel | 2013-06-11 |
| 8387753 | Ergonomic extendable/retractable ladder | Craig S. Aizman, Bruce A. Hillukka, Michael J. Kelly, Wayne A. Shakal | 2013-03-05 |
| D665927 | Metal and wood step ladder | J. Patrick McCool | 2012-08-21 |
| 8225906 | Extendable/retractable ladder | Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker | 2012-07-24 |
| D624200 | Step ladder | Allen A. Caldwell, Nathan L. Schlueter, Matthew J. Decker | 2010-09-21 |
| D593685 | Telescoping ladder rung | Craig S. Aizman, Bruce A. Hillukka, Micheal J. Kelly, Wayne A. Shakal | 2009-06-02 |
| 7048094 | Extending ladder and associated manufacturing methods | Wang Kuo Hua, Craig S. Aizman | 2006-05-23 |
| 6883645 | Extending ladder and associated manufacturing methods | Wang Kuo Hua, Craig S. Aizman | 2005-04-26 |
| 6708800 | Extending ladder and associated manufacturing methods | Wang Kuo Hua, Craig S. Aizman | 2004-03-23 |