Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9586432 | Integrated tab hanging file system | Steven Charles Black, Duane Christensen | 2017-03-07 |
| 9272565 | Integrated tab hanging file system | Steven Charles Black, Duane Christensen | 2016-03-01 |
| 8550330 | Integrated tab hanging file system | Steven Charles Black, Duane Christensen | 2013-10-08 |
| 7980014 | Three dimensional tab system | — | 2011-07-19 |
| 7536812 | Three dimensional tab system | — | 2009-05-26 |