Referenced by|
| US3992246 | Dec 9, 1974 | Nov 16, 1976 | | Solar evaporator | | US4209363 | Feb 15, 1978 | Jun 24, 1980 | | Solar still apparatus | | US4262457 | Sep 12, 1978 | Apr 21, 1981 | | Pneumatic structures | | US4313457 | Nov 20, 1979 | Feb 2, 1982 | Pittsburgh-Des Moines Corporation | Removable condensate collector for elevated water storage facilities | | US4384603 | Jan 28, 1981 | May 24, 1983 | Balfour Beatty Limited | Inflatable receptacle | | US4450855 | Mar 24, 1982 | May 29, 1984 | Pittsburgh-Des Moines Corporation | Removable condensate collector for elevated water storage facilities | | US4541446 | Mar 31, 1983 | Sep 17, 1985 | | In-ground control unit for watering systems | | US4607501 | Oct 19, 1984 | Aug 26, 1986 | | Condensing and collecting vapors emanating from a land surface | | US4698135 | Oct 3, 1985 | Oct 6, 1987 | Sirdan Research Limited | Desalinating drip-irrigation system | | US4809734 | Sep 28, 1988 | Mar 7, 1989 | | Condensate-collecting ceiling for elevated water tower facility | | US4819681 | Oct 13, 1988 | Apr 11, 1989 | | Apparatus and method for draining a swimming pool cover | | US4928348 | Oct 28, 1988 | May 29, 1990 | | Method and apparatus for removing and collecting dust | | US5058774 | May 4, 1990 | Oct 22, 1991 | | Method of and apparatus for detecting and collecting spilled fuel products | | US5316626 | Mar 13, 1992 | May 31, 1994 | | Process and apparatus for the production of fresh water using solar energy | | US5365968 | Mar 24, 1993 | Nov 22, 1994 | | Apparatus for fluid drainage | | US6108970 | Sep 13, 1999 | Aug 29, 2000 | | Self-watering plant guard | | US6487733 | Feb 27, 2001 | Dec 3, 2002 | Island Swimming Sales, Inc. | Self-draining swimming pool cover | | US6658674 | Dec 2, 2002 | Dec 9, 2003 | Stealth Industries, Ltd. | Self-draining swimming pool cover | | USD432203 | Nov 19, 1999 | Oct 17, 2000 | | Solar still |
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