Inventor
NAKAYAMA YASUNOBU
US10 patents
⚠️ This page may combine multiple inventors who share the name “NAKAYAMA YASUNOBU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
6 patentsUS4645882AFeb 24, 1987
Latching relay drive circuit for use in telephone sets
TOSHIBA KK42 citations92
US4636588AJan 13, 1987
Electric source circuit for telephone sets
TOSHIBA KK15 citations73
US4564724AJan 14, 1986
Terminal interface connecting terminal unit having central office line interface to key telephone system
TOSHIBA KK11 citations73
US5250942AOct 5, 1993
Equipment and method for management of terminal identification number in communication system
TOSHIBA KK7 citations72
US4756021AJul 5, 1988
Telephone set
TOSHIBA KK15 citations72
US4932043AJun 5, 1990
Apparatus for controlling key telephone station set in key telephone system
TOSHIBA KK3 citations62
TOKYO SHIBAURA ELECTRIC CO
3 patentsUS4532378AJul 30, 1985
Telephone apparatus capable of inputting character data
TOKYO SHIBAURA ELECTRIC CO55 citations91
US4511764AApr 16, 1985
Telephonic display device
TOKYO SHIBAURA ELECTRIC CO43 citations91
US4567326AJan 28, 1986
Telephone apparatus for selective operation in a normal and repertory dial mode
TOKYO SHIBAURA ELECTRIC CO9 citations73