SUMMA FOUR INC

25 SUNDIAL AVE, MANCHESTER NH 03103-7251, 6036254050
TELEPHONE & TELEGRAPH APPARATUS

1998 SEC Filings

SUMMA FOUR INC, SC 13D/A, 1998-11-13
SUMMA FOUR INC, 15-12G, 1998-11-04
SUMMA FOUR INC, SC 13D, 1998-10-08
SUMMA FOUR INC, DEFM14A, 1998-10-05
SUMMA FOUR INC, 10-Q, 1998-08-14
SUMMA FOUR INC, 8-K, 1998-07-30
SUMMA FOUR INC, DEF 14A, 1998-06-26
SUMMA FOUR INC, 10-K, 1998-06-22
SUMMA FOUR INC, 10-Q/A, 1998-06-19
SUMMA FOUR INC, 10-K405/A, 1998-06-19
SUMMA FOUR INC, 10-K/A, 1998-06-19
SUMMA FOUR INC, 8-K, 1998-06-02
SUMMA FOUR INC, SC 13G, 1998-02-13
SUMMA FOUR INC, 10-Q, 1998-02-12


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