G09B3/08 - CPC Classification Index

ClassID:

195216 ⎘

G09B3/08 - CPC Classification

Classification description:

Manually or mechanically operated teaching appliances working with questions and answers of the multiple-choice answer type, i.e. where a given question is provided with a series of answers and a choice has to be made of chart form

Sub-classes:

G09B3/085 » {with invisibly printed correct answer; the answer being rendered visible by special optical means, e.g. filters; mirrors} 2

Recent Application in this class:

20100140355

2010-06-10

Systems and methods for aiding data organization related applications