Clue: Certain vacuum tube
Certain vacuum tube is a crossword puzzle clue that we have spotted 6 times. There are related clues (shown below).
Referring crossword puzzle answers
Likely related crossword puzzle clues
Recent usage in crossword puzzles:
- Premier Sunday - Aug. 12, 2018
- New York Times - Aug. 5, 2018
- New York Times - Feb. 19, 2017
- New York Times - Dec. 8, 2014
- Universal Crossword - Dec. 17, 2009
- New York Times - July 17, 2006
