SC 13G | 2003-01-23 | SMITH DONALD & CO INC /NJ/ | SPARTON CORP | 382,700 | 5.1% | EDGAR |
SC 13G/A | 2002-02-12 | DIMENSIONAL FUND ADVISORS INC | SPARTON CORP | 529,400 | 7.0% | EDGAR |
SC 13G | 2002-01-18 | SMITH DONALD & CO INC /NJ/ | SPARTON CORP | 382,700 | 5.1% | EDGAR |
SC 13G | 2001-02-02 | DIMENSIONAL FUND ADVISORS INC | SPARTON CORP | 529,200 | 6.8% | EDGAR |
SC 13G | 2000-02-03 | DIMENSIONAL FUND ADVISORS INC | SPARTON CORP | 539,000 | 6.9% | EDGAR |
SC 13G | 2000-02-03 | DIMENSIONAL FUND ADVISORS INC | SPARTON CORP | 539,000 | 6.9% | EDGAR |
SC 13G | 2000-02-03 | DIMENSIONAL FUND ADVISORS INC | SPARTON CORP | 539,000 | 6.9% | EDGAR |