X-RAY APPARATUS & TUBES & RELATED IRRADIATION APPARATUS

Latest 8-A12B SEC Filings
Registration of securities [Section 12(b)]

AMERICAN SCIENCE & ENGINEERING INC, 8-A12B, 1998-04-15
THERMOTREX CORP, 8-A12B, 1997-10-29
TREX MEDICAL CORP, 8-A12B, 1996-06-13


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