Structure for reducing noise of ventilating fan
US-2015337862-A1 · Nov 26, 2015 · US
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Rao Zewei patents in 2015
Rao Zewei was listed as an assignee on 1 patent publication in 2015.
| Metric | Value |
|---|---|
| Company | Rao Zewei |
| Year | 2015 |
| Patents | 1 |
Patents
Representative publications for Rao Zewei in 2015.
Top CPC classifications
Most common classification codes for Rao Zewei in 2015.
| CPC | Patents |
|---|---|
| F04D29/162 | 1 |
| F04D29/4226 | 1 |
| F04D29/441 | 1 |
| F04D29/663 | 1 |
| F04D29/665 | 1 |
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