- All sections
- G - Physics
- G09B - Educational or demonstration appliancesappliances for teaching, or communicating with, the blind, deaf or mutemodelsplanetariaglobesmapsdiagrams
- G09B 21/06 - Devices for teaching lip-reading
Patent holdings for IPC class G09B 21/06
Total number of patents in this class: 3
10-year publication summary
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0
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0
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2
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0
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0
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0
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0
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0
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2
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Technology Innovation Institute – Sole Proprietorship LLC | 122 |
2 |
| MasterCard International Incorporated | 5154 |
1 |
| Other owners | 0 |