Assignee
EPSTEIN JOSEPH CHARLES
US·2 granted patents·51 citations·filing 2009–2012
Top patents by PatentIndex Score
2 records- 0192US9120016B2Interactive guitar game designed for learning to play the guitarEPSTEIN JOSEPH CHARLES·Filed 2009·Granted Sep 1, 2015·36 cites·37 claims
- 0288US8986090B2Interactive guitar game designed for learning to play the guitarEPSTEIN JOSEPH CHARLES·Filed 2012·Granted Mar 24, 2015·15 cites·25 claims
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