Inventor
MARUYAMA TATSUO
11 patents
⚠️ This page may combine multiple inventors who share the name “MARUYAMA TATSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KOKUSAI DENSHIN DENWA CO LTD
3 patentsUS4001611AJan 4, 1977
Asynchronous delay circuit
KOKUSAI DENSHIN DENWA CO LTD11 citations73
US3940555AFeb 24, 1976
Picture signal transmission system
KOKUSAI DENSHIN DENWA CO LTD14 citations72
US4309572AJan 5, 1982
Call processing system with an operator assistance in a telephone switching system
KOKUSAI DENSHIN DENWA CO LTD4 citations62