Inventor · disambiguated record
Ryuzo Sugiura
Also filed as: SUGIURA RYUZO
6 granted patents·70 citations·filing 1983–1987
83Inventor score
Files withTAMURA ELECTRIC WORKS LTD6
Top patents by PatentIndex Score
6 records- 0163US4759055AKey telephone systemTAMURA ELECTRIC WORKS LTD·Filed 1986·Granted Jul 19, 1988·25 cites·1 claims
- 0258US4572928AKey telephone systemTAMURA ELECTRIC WORKS LTD·Filed 1983·Granted Feb 25, 1986·14 cites·14 claims
- 0344US4514597AControl of a key telephone system using a pulse width modulated signalTAMURA ELECTRIC WORKS LTD·Filed 1983·Granted Apr 30, 1985·7 cites·4 claims
- 0442US4823377ASystem for setting registration mode for key telephone setTAMURA ELECTRIC WORKS LTD·Filed 1987·Granted Apr 18, 1989·9 cites·9 claims
- 0542US4821316AKey telephone systemTAMURA ELECTRIC WORKS LTD·Filed 1987·Granted Apr 11, 1989·8 cites·18 claims
- 0636US4754477AKey telephone systemTAMURA ELECTRIC WORKS LTD·Filed 1986·Granted Jun 28, 1988·7 cites·16 claims
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