| 摘要 |
A device in the form of a greeting card, display card, or the like, for producing a visual and/or a sound effect which includes a panel member or the like onto which is applied pictorial and/or printed matter in association with an effects generator, an electronic circuit mounted on the panel member but not visible to the reader of the matter but to which the effects generator is connected, and an activator on the panel member which, when actuated, causes triggering of the electronic circuit to energize the effects generator.
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