Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Telephone answering machine with an erasable message recorded on the incoming message tape by the manufacturer

Telephone answering machine with an erasable message recorded on the incoming message tape by the manufacturer

US Patent 4724119 · Granted Feb 9, 1988

Estimated economic value: $392,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Central irrigation control system2015
Irrigation controller with analog data input devices1995
Irrigation controller1995
Irrigation controller with rain delay feature1993
Irrigation controller having expansion and pump modules1993
Reset system for telephone answering machine in the event of a power failure1988
Reset system for telephone answering machine in event of power failure1988
Telephone answering machine with automatic recording and visual display of time 1987
Speakerphone telephone answering machine1987
Voice operated telephone answering system1986
Telephone answering machine with remote control capabilities1986
Ring delay override for telephone answering system1986