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| Number | Date | Country |
|---|---|---|
| 2062256 | Mar 1992 | CA |
| 2311518 | Jun 1999 | CA |
| 2270761 | Nov 1999 | CA |
| 2074971 | Jul 2002 | CA |
| 2436283 | Feb 2004 | CA |
| 101947 | Jul 2004 | CA |
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| 136298 | Feb 2011 | CA |
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| Entry |
|---|
| Non-Final Office Action issued in co-pending Canadian Patent Application No. 2,811,751 on Jul. 25, 2014. |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 29451529 | Apr 2013 | US |
| Child | 29535173 | US |