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| Number | Title | Issue Date |
| 6837992 | Integrated apparatus for degassing and blending multiple mobile phase streams An integrated mobile phase degassing and blending apparatus for transport of liquid chromatography fluids therethrough includes a component having a first portion and a second portion, with the first portion defining an enclosed degassing chamber, and the second por... | 01/04/2005 |
| 6734961 | Flow cells utilizing photometric techniques A flow cell for transporting fluid in a radiant energy field includes a cell structure having a tube extending therethrough including a radiant energy blocking portion integral therewith. In a particular embodiment, the cell structure includes one or more end caps h... | 05/11/2004 |
| 6596058 | Film degassing system A flow-through vacuum degassing unit for degassing a mobile phase in liquid chromatography applications includes a relatively flat self-supporting thin membrane disposed in a compact degassing component, whereby the thin membrane is gas-permeable and liqu... | 07/22/2003 |
| 4374362 | Instrument zeroing circuit An electronic interface circuit for coupling a source of analog signals to a measuring and/or recording device whereby the time varying component of the analog signal can be separated from any steady-state component, such as a DC bias, which may be presen... | 02/15/1983 |
| 4320010 | Regeneration detector for water softeners A method and apparatus for initiating the regeneration cycle of an ion exchange resin type water softener based upon the movement of the "hardness front" through the resin bed as water being treated is passed therethrough. Electrical probes are provided a... | 03/16/1982 |
| 4114023 | Heater control for rotary members A heater roll in which a resistor-type heater mounted in the roll is controlled by use of a temperature sensing element also located in the roll. Electrical power, particularly AC power, is provided through slip rings and the set point for the temperature... | 09/12/1978 |
