Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Radiotelephone having a non-resonant wave guide acoustically coupled to a microphone

Radiotelephone having a non-resonant wave guide acoustically coupled to a microphone

US Patent 5890072 · Granted Mar 30, 1999

Estimated economic value: $17,333,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Drive shaft balancing machine having two pedestals and first and second vibratio2016
Dual use speaker for both voice communication and signalling2000
Sound transducer and method having light detector for detecting displacement of 1999
Radiotelephone having an acoustical wave guide coupled to a speaker1999
Acoustic horn for use in cellular flip phones1998