| Number | Name | Date | Kind |
|---|---|---|---|
| 4734001 | Bennett | Mar 1988 | A |
| D411963 | Whitley | Jul 1999 | S |
| 6450746 | Kirimoto | Sep 2002 | B1 |
| D604155 | Marczynski | Nov 2009 | S |
| D610442 | Marczynski | Feb 2010 | S |
| 7891923 | Marczynski | Feb 2011 | B2 |
| Number | Date | Country |
|---|---|---|
| 2642135 | Sep 2013 | EP |
| Entry |
|---|
| Checkpoint brochure, http://checkpoint-safety.com/products.html, “Indicators with Retaining Function”. |