G04B 37/20
With hinged covers or backs
Official title: with hinged covers or backs
G04B37/20 (With hinged covers or backs) appears on 1 US grants and 2 published applications in this corpus.
Search patents in G04B- Granted patents
- 1
- Published applications
- 2
- Assignees
- 1
- Inventors
- 2
- Latest grant
- 1 Sep 2015
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| Year | Granted patents | Published applications |
|---|---|---|
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
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