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Class Information
Number: 434/177
Name: Education and demonstration > Language > Spelling, phonics, word recognition, or sentence formation > Crossword puzzle aid
Description: Subject matter relating to aids for creating or working on a crossword puzzle.

Patents under this class:

Patent Number Title Of Patent Date Issued
8136037 Assistant for manually proofreading text documents Mar. 13, 2012
7591469 Diagramless crossword puzzle helper Sep. 22, 2009
7281928 Method and apparatus for conducting a competition using a divided literary work Oct. 16, 2007
RE39542 Preparation of agarose coated, solid agarose-collagen beads containing secretory cells Apr. 3, 2007
7000919 Systems, methods and kits to facilitate the solution of diagramless crossword puzzles Feb. 21, 2006
6739874 Electronic educational toy appliance teaching letters words and numbers May. 25, 2004
6340159 "Double Cross.TM." game show Jan. 22, 2002
5823782 Character recognition educational system Oct. 20, 1998
5566942 Crossword puzzle game and method of generating the same Oct. 22, 1996
5435564 Electronic word building machine Jul. 25, 1995
5393062 Word transformation game Feb. 28, 1995
5288068 Word game system Feb. 22, 1994
5282631 Cross-word board game construction system and method Feb. 1, 1994
5249965 Electronic word selection machine Oct. 5, 1993
5149097 Crossword puzzle aid Sep. 22, 1992
5055049 Word listing system Oct. 8, 1991
5018975 Educational amusement device which includes a game card, and method for using the game card May. 28, 1991
4828499 Apparatus for constructing crossword puzzles May. 9, 1989
4512581 Hidden message puzzle packet Apr. 23, 1985
4299578 Crossword system and game apparatus Nov. 10, 1981
4205852 Crossword system, game and apparatus Jun. 3, 1980

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