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United States Utility Patents
4,939,360 - 4,939,369

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NumberTitle
4,939,360 Particle beam irradiating apparatus having charge suppressing device which applies a bias voltage between a change suppressing particle beam source and the specimen
4,939,361 Method for correcting gamma ray spectra for borehole tracer interference
4,939,362 Borehole fluid density well logging means and method
4,939,363 Scanning tunneling microscope
4,939,364 Specimen or substrate cutting method using focused charged particle beam and secondary ion spectroscopic analysis method utilizing the cutting method
4,939,365 Automatic preliminary irradiation apparatus in transmission electron microscope
4,939,366 Radiation image recording and read-out apparatus, and radiation image recording, read-out and reproducing apparatus
4,939,367 Recording and read-out apparatus
4,939,368 Polychromatic optical strain gauge
4,939,369 Imaging and tracking sensor designed with a sandwich structure



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