Number | Date | Country | Kind |
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000894720 | Feb 2008 | EM | regional |
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211726 | Gilbert | Jan 1879 | A |
384037 | Hill et al. | Jun 1888 | A |
2996043 | Pettingill | Aug 1961 | A |
3687112 | Henderson | Aug 1972 | A |
5107793 | Tymkewicz | Apr 1992 | A |
5762028 | Owings | Jun 1998 | A |
7350481 | Bar-Shalom | Apr 2008 | B2 |