TOMBSTONE EXPLORATION CORP | SC 13G/A: Schedule filed to report acquisition of beneficial ownership of more than 5% of a class of equity securities by passive investors and certain institutions (Amendment)
Jul 30, 2014 14:23 ET
TOMBSTONE EXPLORATION CORP | D: Filing D
Jul 2, 2013 18:40 ET
TOMBSTONE EXPLORATION CORP | SC 13G: Schedule filed to report acquisition of beneficial ownership of more than 5% of a class of equity securities by passive investors and certain institutions
Jun 21, 2013 12:39 ET
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