Title:
Crossword puzzle structure
United States Patent 2782530


Inventors:
Larroca, Ramon G.
Application Number:
US52017255A
Publication Date:
02/26/1957
Filing Date:
07/06/1955
Assignee:
Larroca, Ramon G.
Primary Class:
Other Classes:
273/153J, 273/240
International Classes:
A63F3/04
View Patent Images:
US Patent References:
2703459Puzzle working device1955-03-08
1946318Educational game device1934-02-06
1604127Cross-word-puzzle block1926-10-26
1578554Game apparatus1926-03-30
1487493Ballot-marking apparatus1924-03-18