Indoor location detection using combined radio frequency signal and audio frequency signal beacon system
US-9955315-B2 · Apr 24, 2018 · US
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Patent family 54360511
This patent family groups 2 related publications across US. Members often share priority claims or equivalent filings in different countries.
| Field | Value |
|---|---|
| Family ID | 54360511 |
| Family type | — |
| Earliest priority | Apr 17, 2015 |
| First filing country | US |
| Member publications | 2 |
| Countries | US |
| Representative publication | US9955315B2 — Indoor location detection using combined radio frequency signal and audio frequency signal beacon system |
Representative publication
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US9955315B2 — Indoor location detection using combined radio frequency signal and audio frequency signal beacon system (published Apr 24, 2018)
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