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Class Information
Number: 381/336
Name: Electrical audio signal processing systems and devices > Having non-electrical feature (e.g., mounting) > And loudspeaker > Curved or angled housing
Description: Subject matter in which an enclosure or some part of it (such as a reflex vent pipe) is non-linear, non-planar or constructed with faces which intersect at non-perpendicular angles.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5309518 |
Multiple driver electroacoustical transducing |
May. 3, 1994 |
| 5274709 |
Speaker device for television receiver |
Dec. 28, 1993 |
| 5258584 |
Multiple auxiliary compound driver loudspeaker system |
Nov. 2, 1993 |
| 5212732 |
Effects speaker system |
May. 18, 1993 |
| 5199075 |
Surround sound loudspeakers and processor |
Mar. 30, 1993 |
| 5131052 |
Mid-range loudspeaker assembly propagating forward and backward sound waves in phase |
Jul. 14, 1992 |
| 5125031 |
Speaker system with focused vibration |
Jun. 23, 1992 |
| 5119429 |
Audio installation, in particular stereophonic, for television sets with a large built-in low-frequency loudspeaker |
Jun. 2, 1992 |
| 5109423 |
Audio system with amplifier and signal device |
Apr. 28, 1992 |
| 5097514 |
Equilateral tetrahedral speaker system |
Mar. 17, 1992 |
| 5088574 |
Ceiling speaker system |
Feb. 18, 1992 |
| 5025473 |
Hemispherical speaker system |
Jun. 18, 1991 |
| 4967872 |
Loud speaker system |
Nov. 6, 1990 |
| 4961227 |
Portable loud speaker system |
Oct. 2, 1990 |
| 4953223 |
Speaker mounting system |
Aug. 28, 1990 |
| 4888804 |
Sound reproduction system |
Dec. 19, 1989 |
| 4882753 |
Passive ambience recovery system for the reproduction of sound |
Nov. 21, 1989 |
| 4881265 |
Apex loudspeaker |
Nov. 14, 1989 |
| 4865153 |
Speaker system |
Sep. 12, 1989 |
| 4862508 |
Method for large-scale multiple source sound reinforcement |
Aug. 29, 1989 |
| 4837826 |
Stereophonic baffle |
Jun. 6, 1989 |
| 4776018 |
Removable sound or/and display apparatus |
Oct. 4, 1988 |
| 4764960 |
Stereo reproduction system |
Aug. 16, 1988 |
| 4646349 |
Equipment for the stereophonic sound reproduction in a television receiver |
Feb. 24, 1987 |
| 4475620 |
Loudspeaker with wall reflex absorber |
Oct. 9, 1984 |
| 4418243 |
Acoustic projection stereophonic system |
Nov. 29, 1983 |
| 4357490 |
High fidelity loudspeaker system for aurally simulating wide frequency range point source of sound |
Nov. 2, 1982 |
| 4306120 |
Sound emitter |
Dec. 15, 1981 |
| 4284844 |
Loudspeaker system |
Aug. 18, 1981 |
| 4251687 |
Stereophonic sound reproducing system |
Feb. 17, 1981 |
| 4249037 |
Pyramid loudspeakers with twin cross-phased mid-range speakers |
Feb. 3, 1981 |
| 4227050 |
Virtual sound source system |
Oct. 7, 1980 |
| 4224467 |
Corner mounted sound reproduction speaker apparatus |
Sep. 23, 1980 |
| 4218583 |
Varying loudspeaker spatial characteristics |
Aug. 19, 1980 |
| 4194086 |
Suspended stereo console and light show |
Mar. 18, 1980 |
| 4133975 |
Loudspeaker system with broad image source with directionality control for the tweeter |
Jan. 9, 1979 |
| 4123621 |
Acoustical speaker device |
Oct. 31, 1978 |
| 4051919 |
High fidelity speaker enclosure |
Oct. 4, 1977 |
| 4038499 |
Stereophonic pillow speaker system |
Jul. 26, 1977 |
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