Gruen, James C. Trademarks
LOGICAL-INSIGHT
Printed columns featuring brainteasers and riddles
Owned by: Gruen, James C.
Serial Number: 78363904
BRAINER TEASER
Printed columns featuring brainteasers, crossword puzzles, crossnumber puzzles, and/or trivia questions
Owned by: Gruen, James C.
Serial Number: 78446907
PROF. MAX BRAINER
Printed columns on the subjects of brainteasers, crossword puzzles, crossnumber puzzles, and/or trivia questions
Owned by: Gruen, James C.
Serial Number: 78531877
