Inventor
KOMURO ISAKU
JP13 patents
⚠️ This page may combine multiple inventors who share the name “KOMURO ISAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
10 patentsUS6496576B2Dec 17, 2002
Digital key telephone system and extension terminal device thereof
TOSHIBA KK103 citations98
US6633631B2Oct 14, 2003
Digital key telephone system and extension terminal device thereof
TOSHIBA KK4 citations73
US5513256AApr 30, 1996
Key telephone system
TOSHIBA KK18 citations73
US5224159AJun 29, 1993
Key telephone system provided with telephone sets connectable to add-on modules
TOSHIBA KK8 citations73
US6456705B1Sep 24, 2002
Digital key telephone system and extension terminal device thereof
TOSHIBA KK3 citations62
US6408060B2Jun 18, 2002
Digital key telephone system and extension terminal device thereof
TOSHIBA KK2 citations62
US6373924B2Apr 16, 2002
Digital key telephone system and extension terminal device thereof
TOSHIBA KK3 citations62
US6118863ASep 12, 2000
Exchanging apparatus and control method for exchanging and connecting destination terminal and calling terminal, and communication terminal apparatus communicating with other terminals through communication network and control method
TOSHIBA KK6 citations62
US4650932AMar 17, 1987
Key telephone system
TOSHIBA KK5 citations62
US6377671B2Apr 23, 2002
Digital key telephone system and extension terminal device thereof
TOSHIBA KK0 citations51
TOKYO SHIBAURA ELECTRIC CO
3 patentsUS6263061B1Jul 17, 2001
Digital button telephone system and extension terminal for the same
TOKYO SHIBAURA ELECTRIC CO23 citations92
US4605825AAug 12, 1986
Function key assignments in a key telephone system
TOKYO SHIBAURA ELECTRIC CO14 citations73
US4559417ADec 17, 1985
Method of setting operating data in a key telephone system
TOKYO SHIBAURA ELECTRIC CO14 citations73