| Number | Date | Country | Kind |
|---|---|---|---|
| 160,632 | Jan 2015 | CA | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 1379620 | Fisher | May 1921 | A |
| D104270 | Lafond | Apr 1937 | S |
| 3892268 | Asbeck | Jul 1975 | A |
| 4063583 | Rieger et al. | Dec 1977 | A |
| 4928740 | Konig | May 1990 | A |
| 4947912 | Weidler | Aug 1990 | A |
| 5058645 | Müller | Oct 1991 | A |
| 5072763 | Muller | Dec 1991 | A |
| 6039100 | Muller | Mar 2000 | A |
| 6520231 | Dohmeier | Feb 2003 | B1 |
| 7299842 | Rieger | Nov 2007 | B2 |
| 7930874 | Rieger et al. | Apr 2011 | B2 |
| 8234852 | Pengg et al. | Aug 2012 | B2 |
| 8276630 | Pengg et al. | Oct 2012 | B2 |
| 20050211356 | Rieger | Sep 2005 | A1 |
| 20100307127 | Pengg | Dec 2010 | A1 |
| Entry |
|---|
| Quality Chain Canada. QCC Traction. 2015 [earliest online date], [site visited Jul. 15, 2016]. Available from Internet, <URL:http://www.qcctraction.com/>. |