Inventor Thomas Alva __ (6)

I believe the answer is:

edison

(Other definitions for edison that I've seen before include "Inventor of the light bulb" , "The inventor is strangely onside" , "Thomas --, US?inventor" , "US scientist/inventor" , "Inventor of the carbon filament lamp, d. 1931" .)

I've seen this clue in the Newsday.

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