
YDER PC Pyas31 P33 P32
United states patent 19 11 45 takahashi et al. 54 semiconductor device patent number: date of patent: 009134 l/l985 43849 167454 218139 3/1985 japan . 8/1985 japan . 9/1986 japan . japan .. .. 357/70 primary examinerrolf hille 73 assignees:...
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