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Inventor
HIROKAWA MASAHITO
JP
2 patents
⚠️ This page may combine multiple inventors who share the name “HIROKAWA MASAHITO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI COMM TECH LTD
1 patent
US7567269B2
Jul 28, 2009
Television phone adaptor
HITACHI COMM TECH LTD
5 citations
54
HITACHI LTD
1 patent
US7778243B2
Aug 17, 2010
Method for DTMF transfer by RTP
HITACHI LTD
1 citations
45