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Class Information
Number: 381/332
Name: Electrical audio signal processing systems and devices > Having non-electrical feature (e.g., mounting) > And loudspeaker
Description: Subject matter where the specific container holds a transducer for converting an electrical signal into sound, e.g., a transducer baffle or housing.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5673329 |
Omni-directional loudspeaker system |
Sep. 30, 1997 |
| 5668882 |
Notebook computer speakers |
Sep. 16, 1997 |
| 5664020 |
Compact full-range loudspeaker system |
Sep. 2, 1997 |
| 5659155 |
Acoustical transducer enclosure |
Aug. 19, 1997 |
| 5657392 |
Multi-way speaker with a cabinet defining a midrange driver pyramidal compartment |
Aug. 12, 1997 |
| 5652544 |
Apparatus and method for programming an amplifier |
Jul. 29, 1997 |
| 5647007 |
Optimized sound components for hair dryer stereo system |
Jul. 8, 1997 |
| 5638456 |
Piezo speaker and installation method for laptop personal computer and other multimedia applications |
Jun. 10, 1997 |
| 5633943 |
Audio system for a personal computer |
May. 27, 1997 |
| 5621804 |
Composite loudspeaker apparatus and driving method thereof |
Apr. 15, 1997 |
| 5610990 |
Hair dryer with integral stereo audio system |
Mar. 11, 1997 |
| 5606624 |
Audio apparatus demonstrating |
Feb. 25, 1997 |
| 5590207 |
Sound reproducing array processor system |
Dec. 31, 1996 |
| 5537480 |
Sound output system |
Jul. 16, 1996 |
| 5533132 |
Loudspeaker thermal management structure |
Jul. 2, 1996 |
| 5519572 |
Computer peripheral apparatus |
May. 21, 1996 |
| 5493697 |
Communications system for the game of football including player-carried transmitter and side lines speakers for overcoming spectator noise |
Feb. 20, 1996 |
| 5491756 |
System for delivering sound to and monitoring effects on a fetus |
Feb. 13, 1996 |
| 5440646 |
Molded housing with integral acoustic chamber and anti-rattle printed circuit board supports |
Aug. 8, 1995 |
| 5403080 |
Device for concealing a loudspeaker |
Apr. 4, 1995 |
| 5321760 |
Retractable speaker assembly |
Jun. 14, 1994 |
| 5297212 |
Loudspeaker system installed on an automobile door and including a woofer and a tweeter |
Mar. 22, 1994 |
| 5258584 |
Multiple auxiliary compound driver loudspeaker system |
Nov. 2, 1993 |
| 5251188 |
Elongated-pattern sonic transducer |
Oct. 5, 1993 |
| 5228090 |
Truck rear window speaker apparatus |
Jul. 13, 1993 |
| 5109422 |
Acoustic apparatus |
Apr. 28, 1992 |
| 5088574 |
Ceiling speaker system |
Feb. 18, 1992 |
| 4991221 |
Active speaker system and components therefor |
Feb. 5, 1991 |
| 4973941 |
Electronic sound generating device |
Nov. 27, 1990 |
| 4953220 |
Mobile speaker system having an illumination effect |
Aug. 28, 1990 |
| 4923032 |
Ceiling panel sound system |
May. 8, 1990 |
| 4865153 |
Speaker system |
Sep. 12, 1989 |
| 4727583 |
Telephone transducer with improved frequency response |
Feb. 23, 1988 |
| 4593404 |
Method of improving the acoustics of a hall |
Jun. 3, 1986 |
| 4504704 |
Loudspeaker system |
Mar. 12, 1985 |
| 4346640 |
Decorative light flashing apparatus and acousto-electric transducer therefor |
Aug. 31, 1982 |
| 4268718 |
Housing acoustical amplifier |
May. 19, 1981 |
| 4152544 |
Speaker supporting device |
May. 1, 1979 |
| 4145571 |
Loudspeaker enclosure with acoustically coupled loudspeaker damper |
Mar. 20, 1979 |
| 4123621 |
Acoustical speaker device |
Oct. 31, 1978 |
| 4112256 |
Loudspeaker and stereophonic loudspeaker system |
Sep. 5, 1978 |
| 4112168 |
High stiffness speaker cone |
Sep. 5, 1978 |
| 4101736 |
Device for increasing the compliance of a speaker enclosure |
Jul. 18, 1978 |
| 4004094 |
Enclosure system for sound generators |
Jan. 18, 1977 |
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