Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Telephone answering machine having solid state and magnetic tape storage for outgoing announcements

Telephone answering machine having solid state and magnetic tape storage for outgoing announcements

US Patent 4959852 · Granted Sep 25, 1990

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Dynamically displaying driver vehicle information for vehicles2025
Electret condenser microphone and manufacturing method thereof2021
Method and device for equalizing audio signals2021
Microphone and method for processing audio signals2020
Gradient micro-electro-mechanical systems (MEMS) microphone2020
Gradient micro-electro-mechanical systems (MEMS) microphone2018
Dual cell MEMS assembly2014
Passive sound pressure level limiter with balancing circuit2013
Passive sound pressure level limiter2012
Transducer package with interior support frame2012
Controlled leakage omnidirectional electret condenser microphone element2012
Transducer package with transducer die unsupported by a substrate2010