Number | Name | Date | Kind |
---|---|---|---|
RE28966 | Blockwick | Sep 1976 | |
3164110 | Bofinger | Jan 1965 | |
3281301 | Bolesky | Oct 1966 | |
3330228 | Donnelly | Jun 1967 | |
3462330 | Greig et al. | Aug 1969 | |
3467032 | Rowlands et al. | Sep 1969 | |
3628468 | Angelbeck, Jr. | Dec 1971 | |
3640229 | Bell | Feb 1972 | |
3680496 | Westlake, Jr. | Aug 1972 | |
3687764 | Rogosch et al. | Aug 1972 | |
3699902 | Allgeyer et al. | Oct 1972 | |
3717922 | Witkowski | Feb 1973 | |
3737496 | Voorhees, Sr. | Jun 1973 | |
3911514 | Ito | Oct 1975 | |
3935358 | Wyeth et al. | Jan 1976 | |
3954923 | Valyi | May 1976 | |
4068478 | Meyers et al. | Jan 1978 | |
4118261 | Pedler | Oct 1978 | |
4157415 | Linderberg | Jun 1979 | |
4175315 | Hayes, Sr. et al. | Mar 1979 | |
4192701 | Martin et al. | Mar 1980 | |
4382348 | Kitsu et al. | May 1983 | |
4428306 | Dresen et al. | Jan 1984 | |
4490884 | Vickers | Jan 1985 | |
4536988 | Hogen | Aug 1985 | |
4545090 | Redmond | Oct 1985 | |
4637909 | Lucca | Jan 1987 | |
4788088 | Kohl | Nov 1988 | |
4790972 | Coffman | Dec 1988 | |
4818579 | Uchida | Apr 1989 | |
4991343 | Wait | Feb 1991 |
Entry |
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Lemna, The New Alternative WasteWater Treatment--Lemna Corporation, Mendota Heights, Water Treatment--Lemna Corporation, Mendota Heights, Minnesota. |
Operations Forum, vol. 4, No. 8, Aug. 1987 "Boosting Pond Performance With Aquaculture," Viet Ngo. |