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| Number | Title | Issue Date |
| 7271670 | CR oscillation circuit A CR oscillation circuit comprises first and second logic elements, a capacitive element, and a resistive element. The first logic element is connected between a first node and a second node. The second logic element is connected between the second node and a third ... | 09/18/2007 |
| 5016196 | Rain sampling device The present invention constitutes a rain sampling device adapted for independent operation at locations remote from the user which allows rainfall to be sampled in accordance with any schedule desired by the user. The rain sampling device includes a mecha... | 05/14/1991 |
| 4964300 | Method and apparatus for determining time, direction and composition of impacting space particles A space particle collector for recording the time specific particles are captured, and its direction at the time of capture, utilizes an array of targets, each comprised of an MOS capacitor on a chip charged from an external source and discharged upon imp... | 10/23/1990 |
| 4932254 | Detector for dry deposition of atmospheric contaminants having a coating capable of retaining contaminants A detector for dry deposition of atmospheric contaminants comprised of a surrogate surface upon which the contaminants are deposited from the atmosphere; an airfoil-type surface circumferentially surrounding the surrogate surface and providing a laminar o... | 06/12/1990 |
| 4774836 | Detector for dry deposition of atmospheric contaminants A detector for dry deposition of atmospheric contaminants comprised of a surrogate surface upon which the contaminants are deposited from the atmosphere; an airfoil-type surface circumferentially surrounding the surrogate surface and providing a laminar o... | 10/04/1988 |
| 4732037 | Automated rainwater collector An automated rain water collector is disclosed to collect a plurality of successive rain water samples, comprised of a reservoir into which rain water is collected and discharged, and a motor-driven turntable which holds a plurality of sample bottles. Whe... | 03/22/1988 |
| 4665743 | Automatic rain gauge An automatic rain gauge or pluviometer comprising a first receiver for receiving dry fallout; a second receiver for receiving wet fallout, provided with a first sensor able to emit a signal when a certain wet fallout sample volume has been collected; a cl... | 05/19/1987 |
| 4245499 | Apparatus for the controlled sampling of rain water An apparatus for sampling rain which comprises a container receiving a saing vessel and provided with a cover having a drive which opens upon detection of a first rain phase and closes at a second rain phase whereby the sampling vessel remains free from ... | 01/20/1981 |
| 4140011 | Automatic precipitation sampler An automatic precipitation sampler contains a precipitation detector which signals a control system to remove a cover above the collector surface at initiation of precipitation. Water flows from the inert collector surface, through a sample distributor ha... | 02/20/1979 |
| 4073193 | Transducer device A transducer device and a system incorporating said transducer device useful, for example, for measuring a characteristic of particles in a particle flow stream. The transducer device comprises a front surface solid element in which an elastic wave is cre... | 02/14/1978 |
| 3971256 | Meteoroid capture cell construction A thin membrane covering the open side of a meteoroid capture cell causes an impacting meteoroid to disintegrate as it penetrates the membrane. The capture cell then contains and holds the meteoroid particles for later analysis.... | 07/27/1976 |
