Question Or Problem Eliciting Response Patents (Class 434/322)
- Involving heat or chemical reaction (Class 434/328)
- Involving fluid flow (Class 434/329)
- Involving magnetic attraction (Class 434/330)
- By optical element (e.g., mirror, color filter, lens, etc.) (Class 434/331)
- Reward dispensed for correct answer (Class 434/332)
- Picture or pattern completed by examinee placing plaques bearing portions thereof in correct relation (Class 434/333)
- Hand-held element insertable to different depths in apertures respectively representing right and wrong answers (Class 434/334)
- By means including electrical component (Class 434/335)
- Size or shape of, or aperture in, free element cntrols indication of response correctness (Class 434/345)
- Correctness of response indicated when examinee physically alters element other than by marking it (Class 434/346)
- Correct answer displayed on side of element opposite side displaying question or problem (Class 434/347)
- Correct answer hidden until examinee moves element (Class 434/348)
- Comparison of response form with standard answer form (Class 434/354)
- Light detector sensing response (Class 434/358)
- Electrical means sensing conductive mark representing response (Class 434/359)
- Means sensing aperture representing response (Class 434/360)
- Means perforating response form at correct answer location (Class 434/361)