Number | Name | Date | Kind |
---|---|---|---|
2930485 | Nordell | Mar 1960 | |
4045350 | Kupf et al. | Aug 1977 | |
4229304 | Fismer | Oct 1980 | |
4326819 | Atencid | Apr 1982 | |
4430142 | Ochi et al. | Feb 1984 | |
4521306 | Day | Jun 1985 | |
4540313 | Broome | Sep 1985 | |
4594024 | Jenkner et al. | Jun 1986 | |
4746244 | Broome | May 1988 | |
4790935 | Johnson | Dec 1988 | |
4793928 | Tsukamoto et al. | Dec 1988 |
Entry |
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Parkinson, "Frazil Ice Problems at Trash Racks," Winter Operation-Ice Problems, Montreal, Aug. 1987, pp. 1-10. |