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H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
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FR469444D1913-05-211913-05-21
Detector for wireless telegraphy devices
ExpiredFR469444A
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