发明实用新型和外观设计专利权的期限，自哪天为起算日？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31027' and id < 2496439 and id<>'2496439' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31027' and id > 2496439 and id<>'2496439' order by id asc limit 5