G09B 7/00

Electrically-operated teaching apparatus or devices working with questions and answers

Official title: Electrically-operated teaching apparatus or devices working with questions and answers (mechanically operated G09B3/00; computing arrangements G06F)

G09B7/00 (Electrically-operated teaching apparatus or devices working with questions and answers) appears on 3,869 US grants and 6,665 published applications in this corpus.

Search patents in G09B
Granted patents
3,869
Published applications
6,665
Assignees
2,311
Inventors
12,290
Latest grant
6 Oct 2026

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G09B 7/00: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976240
1977250
1978180
1979100
1980140
1981190
1982130
198360
1984160
1985140
1986140
1987120
1988120
1989210
1990120
1991190
1992240
1993290
1994340
1995360
1996330
1997270
1998600
1999530
2000710
20015440
200264191
200373239
200483233
200560233
200692256
200767233
200850264
200951239
201095213
201175195
2012101241
2013150277
2014153385
2015124345
2016148381
2017144331
2018163364
2019234360
2020233286
2021240261
2022206257
2023192250
2024168211
2025147196
202686184

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

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