| |
 |
|
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 |
| 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 |
|
|
|
