Inventor
TSUKADA KEIZO
6 patents
⚠️ This page may combine multiple inventors who share the name “TSUKADA KEIZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
5 patentsUS4650931AMar 17, 1987
Cordless telephone
SONY CORP31 citations91
US4639550AJan 27, 1987
Cordless telephone
SONY CORP36 citations86
US5363430ANov 8, 1994
Cordless telephone apparatus having a low power stand-by mode and a hold mode
SONY CORP19 citations73
US4267467AMay 12, 1981
Timer circuit
SONY CORP13 citations71
US4205274AMay 27, 1980
Power amplifier circuit
SONY CORP3 citations60