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United States Utility Patents
6,992,280 - 6,992,289

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NumberTitle
6,992,280 Test object for calibration of imaging measurements of mammalian skeletal joints
6,992,281 Mass spectrometer
6,992,282 Use of a nebulizer to add gas to eliminate metal deposition on the sampling orifices of an inductively coupled plasma mass spectrometer
6,992,283 Mass spectrometer
6,992,284 Ion mobility TOF/MALDI/MS using drift cell alternating high and low electrical field regions
6,992,285 Method and apparatus for analyzing a substance using MSn analysis
6,992,286 Material characterization system
6,992,287 Apparatus and method for image optimization of samples in a scanning electron microscope
6,992,288 Apparatus and method for directing gas towards a specimen
6,992,289 Method for performing focusing in a particle-optical device with the aid of astigmatism in the particle beam



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