Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Multiple use digital tone generator in telephone

Multiple use digital tone generator in telephone

US Patent 4571462 · Granted Feb 18, 1986

Estimated economic value: $909,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Wireless digital communication device, and a peak-detector1999
Voltage reference arrangement, a voltameter, a battery voltage detection arrange1998
Wireless digital communication device, and a pulse shaping network1998
Buffer system with reduced interference1995
Digital filter1992
Telecommunication system comprising a bus conductor and telecommunication statio1989
Method, station and system for the transmission of messages in the form of data 1987
Transmission circuit for an electronic telephone set1985
Telephone subscriber line looping circuit1984
Line interruption arrangement1983
Voltage stabilizer suitable for use in a telephone set1983
Line interruption circuit for use in a telephone set1983