Sigma Enterprises, Inc. [Tokyo, Japan]
98 items with a valid date were considered for this timeline (65.77% of the total)
51 items with an invalid date.
Help us in our quest to find exact dates for:
197?: 1 item.
198?: 1 item.
199?: 25 items.
19??: 16 items.
200?: 5 items.
????: 3 items.