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Inventor
IMUKAI TAKAFUMI
JP
2 patents
Patents
2 patents
US8451115B2
May 28, 2013
System and method for preventing portable terminal from being left, and portable terminal
IMUKAI TAKAFUMI
18 citations
73
US8611882B2
Dec 17, 2013
Mobile terminal device including ringing device
IMUKAI TAKAFUMI
0 citations
45