Lighted greeting cards
US4055014A · kind A · utility
57Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1976 |
| Grant date | Oct 25, 1977 |
| Priority date | — |
| Expiry date | Mar 25, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/227
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lighted greeting card having indicia formed on the front face thereof. A backing of rigid polymeric foam material supports a sheet material card thereon, the sheet material card receiving at least one light emitting diode therein. The rear of the backing has first and second openings formed therein for receipt of a battery in one of two positions depending upon how the greeting card is to be displayed. Circuitry for flashing the diode on and off, either periodically or in repsonse to sound, is mounted in a recess in the front face of the backing, hidden by the sheet material card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.