using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        String ss = @"

       <TR><TH scope=""row"" valign=""top"" align=""left"" width=""10%"" nowrap>Appl. No.:

       </TH><TD align=""left"" width=""90%"">

       <b> 08/940,685</b></TD></TR>

       <TR><TH scope=""row"" valign=""top"" align=""left"" width=""10%"">Filed:

       </TH><TD align=""left"" width=""90%"">

       <b>September 30, 1997</b></TD></TR>

       </TABLE>";

        // test #1QPLUoQa (RegExp) [ptt.cc]

        var str = "" + new Regex(@"Appl. No.:[^*]*?\/(.*)?(</b>)", RegexOptions.IgnoreCase).Match(ss).Groups[1];

        Console.WriteLine(str);

        Console.WriteLine("---");

        // test groupCollection

        GroupCollection groups = new Regex(@"Appl. No.:[^*]*?\/(.*)?(</b>)", RegexOptions.IgnoreCase).Match(ss).Groups;

        foreach (var itr in groups) {

            Console.WriteLine("-");

            Console.WriteLine(itr);

        }

    }

}