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| Patents for E03B 3 - Methods or installations for obtaining or collecting drinking water or tap water (5,213) |
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| 03/27/1979 | US4146372 Process and system for recovering water from the atmosphere | | 01/16/1979 | US4134269 Lawn watering system | | 01/09/1979 | US4133761 Submerged settler for suspended solids | | 01/09/1979 | US4133379 Foraminous screening device and method for making same | | 08/22/1978 | US4108255 Well drilling apparatus | | 07/25/1978 | US4102395 Protected well screen | | 10/11/1977 | US4052880 Pipe perforating machine | | 09/27/1977 | US4050262 Apparatus for extracting water from the atmosphere | | 03/29/1977 | US4014387 Apparatus and process for drawing water from a water-bearing strata | | 08/10/1976 | US3973311 Method of forming high load self-cleaning helical spring filters | | 02/10/1976 | US3937281 High load self-cleaning helical spring filters | | 01/06/1976 | US3930754 Portable water sampling apparatus | | 01/06/1976 | US3930538 Wellpoint with adjustable valve |
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