Symbol Tech to Delay Results  NEW YORK (Reuters) - Symbol Technologies &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=SBL.N target=/stocks/quickinfo/fullquote"&gt;SBL.N&lt;/A&gt;, a bar  code scanner and handheld computer maker, said on Monday it  will delay filing its third-quarter results, and it revised  downward results for the first nine months of the year because  of errors in how inventory levels were reported.