A47C 20/18
Using friction gearing
Official title: using friction gearing
A47C20/18 (Using friction gearing) appears on 1 US grants and 3 published applications in this corpus.
Search patents in A47C- Granted patents
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- Published applications
- 3
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- 2
- Inventors
- 5
- Latest grant
- 31 Aug 2021
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| 2018 | 0 | 1 |
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| 2021 | 1 | 0 |
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