Patents Represented by Attorney Miner L. Hartmann

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  • Apparatus for preparing liquid samples for analysis in automatic analyzers
    Patent number: 3969250
    Abstract: An improved device for filtering, isolating, containing, and storing fluid specimens which are to be analyzed with an automatic chemical analyzer. The device includes a filter means for removing particulates, a membrane valve for isolating the filtrate, a releasable piston ring which permits telescoping of the assembly, and a plunger tube which serves as a simple and/or storage vessel.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: July 13, 1976
    Inventor: Andrew F. Farr