Assignee
SUMI KAZUHIRO
JP·0 granted patents·2 pending applications·0 citations·filing 2010–2011
Top patents by PatentIndex Score
2 records- 0143US2012120946A1Telephone Exchange Apparatus, Telephone Exchange Apparatus Control Method, and Telephone SystemSUMI KAZUHIRO·Filed 2011·Application pending·0 cites
- 0221US2011158234A1Telephone exchange system, telephone exchange apparatus, and telephone terminalSUMI KAZUHIRO·Filed 2010·Application pending·0 cites
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