After almost a year, they still have not completed their DBA filings in Missouri:
https://www.sos.mo.gov/BusinessEntity/soskb/SearchResults.asp?FormName=CorpNameSearch&Words=Starting&SearchStr=Butterfly+Labs&SearchType=Search

I got that information from this thread:
https://bitcointalk.org/index.php?topic=53530.msg650205#msg650205

I would REALLY like to find out the status of BFL as a legitimate business.  DBA filings should not take over a year (should they?).