04703573 is referenced by 155 patents and cites 14 patents.

An activated work comprising at least two turnable pages pivotably attached to one edge of each of the pages so that the pages are pivotable from a juxtaposed closed position to an adjacent opened position, a visual image display affixed to one of the pages, the visual image display having a first visual activation state at which a visual image is not visible thereon and a second visual activation state at which a visual image is visible thereon, a sound generator attached to the work having a first activation state at which an audible sound is not generated and a second activation state at which an audible sound is generated, connected to the visual display for selectively activating the visual display from one of the visual activation states to another upon pivoting the pages from the open position to the closed position, and connected to the sound generator for selectively activating the sound generator from one of the sound activation states to another upon pivoting the pages from the closed position to the opened position or from the opened position to the closed position.

Title
Visual and audible activated work and method of forming same
Application Number
6/698161
Publication Number
4703573
Application Date
February 4, 1985
Publication Date
November 3, 1987
Inventor
John L Sigalos
7335 Tophill Cir., Dallas, 75248
TX, US
Alfred E Hall
14943 Hillcrest Rd., Dallas, 75248
TX, US
Earl H Oliver
2516 St. Anthony Rd., Minneapolis, 55418
MN, US
John W Montgomery
1307 Lodema, Duncanville, 75116
TX, US
Agent
Sigalos & Levine
IPC
G09F 27/00
View Original Source