Resources Contact Us Home
Browse by Category: Main > Business
Class Information
Number: 434/344
Name: Education and demonstration > Question or problem eliciting response > Correctness of response indicated to examine by self-operating or examinee actuated means > By means including electrical component > Correct answer illuminated
Description: Subject matter wherein the correct answer to a question or problem is present on a carrier surface but is not visible to an examinee until the correct response is selected, at which time the correct answer is illuminated and revealed.

Patents under this class:

Patent Number Title Of Patent Date Issued
6632096 Method and apparatus for teaching and learning Oct. 14, 2003
4824376 Educational device Apr. 25, 1989
4731027 Educational teaching toy Mar. 15, 1988
4228596 Illuminated teaching device and board game Oct. 21, 1980
4085523 Teaching machine Apr. 25, 1978
4051608 Teaching machine Oct. 4, 1977
4001948 Light response teaching system Jan. 11, 1977
3977092 Teaching machine card Aug. 31, 1976
3974575 Teaching machine Aug. 17, 1976

  Recently Added Patents
Dynamic reconstruction of a calibration state of an absorption spectrometer
System and method for efficient association of a power outlet and device
Spark plug
Rain barrel
Power converter and method including noise suppression by controlling phase shifting of converter cells
Chip on chip semiconductor device including an underfill layer having a resin containing an amine-based curing agent
  Randomly Featured Patents
Electrical power generation without harmful emissions
Network intermediate node cache serving as proxy to client node to request missing data from server
Thermal actuator drop-on-demand apparatus and method with reduced energy
Slide closure for the tapping channel of a molten metal container
Titanium dioxide nanoparticles
Method for interconnecting an instrument manifold with an orifice plate assembly
Guanidine derivatives of imidazoles and thiazoles
Systems and methods for multiple-input multiple-output communications systems
Device for clamping sheet-shaped recording material