Apparatus for providing passive stereo amplification for a portable device
US-9661412-B2 · May 23, 2017 · US
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Yan Qifeng patents in 2017
Yan Qifeng was listed as an assignee on 2 patent publications in 2017.
| Metric | Value |
|---|---|
| Company | Yan Qifeng |
| Year | 2017 |
| Patents | 2 |
Patents
Representative publications for Yan Qifeng in 2017.
Method and apparatus for distributing content to multiple devices
US-9634903-B2 · Apr 25, 2017 · US
Top CPC classifications
Most common classification codes for Yan Qifeng in 2017.
| CPC | Patents |
|---|---|
| G06F3/0482 | 1 |
| G06F3/04842 | 1 |
| H04L12/403 | 1 |
| H04L41/22 | 1 |
| H04L67/10 | 1 |
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