Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Wide-band loudspeaker having a diaphragm area divided into sub-areas for various frequency ranges

Wide-band loudspeaker having a diaphragm area divided into sub-areas for various frequency ranges

US Patent 4821330 · Granted Apr 11, 1989

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Monoclonal antibodies against tumor-associated antigens, processes for the prepa2000
Epitope which binds to monoclonal antibody1998
Monoclonal antibodies against tumor-associated antigens, processes for the prepa1997
Polynucleotides encoding the anti-PEM antibody BW835 variable domains and expres1997
Use of pairs of leucine zipper peptides in immunoassay methods1997
Monoclonal antibodies against tumor-associated antigens1997
Device for compensating reproduction errors in an electroacoustic transducer1987
Process for the production of a sound recording and a device for carrying out th1986