Inventor

BREEN ROBERT N

2 patents

⚠️ This page may combine multiple inventors who share the name “BREEN ROBERT N”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

AT & T INFORMATION SYSTEMS INC

1 patent

US4599719AJul 8, 1986

Full duplex data set with half-duplex emulation

AT & T INFORMATION SYSTEMS INC34 citations86

BELL TELEPHONE LABOR INC

1 patent

US4388697AJun 14, 1983

Voiceband data set circuitry with dual bus architecture

BELL TELEPHONE LABOR INC9 citations66