Answer: regd

AnswerCrossword Clue
REGDGovt.-certified
REGDKind of mail: Abbr.
REGDGovt.-certified, as a patent
REGDTrademark abbr.
REGDRecorded, as a patent (abbr.)
REGDLike a pat. no longer pend.
REGDOfficially listed: Abbr.
REGDLike many a TM