SIGMAFORM CORP <SGMA> 3RD QTR JAN 31 NET Shr one ct vs five cts Net 42,469 vs 226,791 Sales 7,963,620 vs 6,886,414 Nine mths Shr 12 cts vs 22 cts Net 490,927 vs 949,650 Sales 24.0 mln vs 18.7 mln