Clue: -- U.S. Pat. Off.
-- U.S. Pat. Off. is a crossword puzzle clue that we have spotted 10 times. There are related clues (shown below).
Referring crossword puzzle answers
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Recent usage in crossword puzzles:
- Sheffer - Sept. 14, 2013
- Sheffer - May 5, 2012
- Sheffer - Dec. 26, 2011
- Sheffer - Sept. 22, 2011
- Sheffer - Nov. 20, 2010
- Sheffer - Aug. 30, 2010
- Sheffer - March 19, 2010
- Sheffer - June 19, 2009
- Sheffer - Oct. 3, 2008
- Sheffer - Aug. 9, 2008