Patents Represented by Attorney Chun Ming Chih

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  • Mark retaining structure of a micro-differential pressure gauge
    Patent number: 8033239
    Abstract: A mark retaining structure of a micro-differential pressure gauge includes a mark member attached to the edge of the micro-differential pressure gauge for indicating the critical value. The mark member includes an engaging portion, an extension board and a hook to engage with a recess and a circular flange of the micro-differential pressure gauge. The present invention provides a positioning function.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: October 11, 2011
    Inventor: Li-Chen Chen