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Class Information
Number: 181/199
Name: Acoustics > Sound-modifying means > Housing or enclosure (e.g., sound confining and absorbing) > Speaker type
Description: Subject matter wherein the enclosure is for a loudspeaker.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4790408 |
Coiled exponential bass/midrange horn loudspeakers |
Dec. 13, 1988 |
| 4787472 |
Audio speaker apparatus |
Nov. 29, 1988 |
| 4785908 |
Vented loudspeaker |
Nov. 22, 1988 |
| 4778027 |
Rhythmizer |
Oct. 18, 1988 |
| 4773502 |
Enclosure for loudspeaker systems |
Sep. 27, 1988 |
| 4754852 |
Simulated rock speaker assembly |
Jul. 5, 1988 |
| 4753317 |
Trapezoidal loudspeaker enclosure |
Jun. 28, 1988 |
| 4750585 |
Loudspeaker enclosure for suppressing unwanted audio waves |
Jun. 14, 1988 |
| 4733749 |
High output loudspeaker for low frequency reproduction |
Mar. 29, 1988 |
| 4730694 |
Electro-mechanical reproduction of sound |
Mar. 15, 1988 |
| 4730693 |
Multichannel loudspeaker enclosure |
Mar. 15, 1988 |
| 4714133 |
Method and apparatus for augmentation of sound by enhanced resonance |
Dec. 22, 1987 |
| 4696369 |
Speaker and baffle system for a vehicle storage well and method of installing same |
Sep. 29, 1987 |
| 4690244 |
Loudspeaker enclosures |
Sep. 1, 1987 |
| 4673057 |
Geometrical transducer arrangements |
Jun. 16, 1987 |
| 4657108 |
Constant pressure device |
Apr. 14, 1987 |
| 4655315 |
Speaker system |
Apr. 7, 1987 |
| 4650031 |
Cabinet for loudspeaker |
Mar. 17, 1987 |
| 4640381 |
Wall-mounted resin speaker cabinet |
Feb. 3, 1987 |
| 4635748 |
Speaker cabinet having interactive speakers |
Jan. 13, 1987 |
| 4629029 |
Multiple driver manifold |
Dec. 16, 1986 |
| 4629030 |
Phase coherent acoustic transducer |
Dec. 16, 1986 |
| 4624338 |
Loudspeaker enclosure for a vibrating diaphragm loudspeaker |
Nov. 25, 1986 |
| 4624337 |
Speaker enclosure |
Nov. 25, 1986 |
| 4623034 |
Loudspeaker construction |
Nov. 18, 1986 |
| 4621708 |
Tweeter bidirectional radiating |
Nov. 11, 1986 |
| 4618025 |
Acoustical ducting for speakers and enclosures |
Oct. 21, 1986 |
| 4616731 |
Speaker system |
Oct. 14, 1986 |
| 4611686 |
Speaker system |
Sep. 16, 1986 |
| 4596305 |
Loudspeaker box in the shape of a shell construction |
Jun. 24, 1986 |
| 4592444 |
Low frequency speaker enclosure |
Jun. 3, 1986 |
| 4591020 |
Loudspeaker enclosure with isolation of loudspeaker vibration |
May. 27, 1986 |
| 4588042 |
Parabolic speaker |
May. 13, 1986 |
| 4580654 |
Portable sound speaker system |
Apr. 8, 1986 |
| 4580653 |
Portable speaker for vehicles |
Apr. 8, 1986 |
| 4572325 |
Stereophonic baffle |
Feb. 25, 1986 |
| 4558762 |
Loudspeaker |
Dec. 17, 1985 |
| 4553628 |
Speaker system |
Nov. 19, 1985 |
| 4550230 |
Speaker grille with snap-in fastener system |
Oct. 29, 1985 |
| 4549631 |
Multiple porting loudspeaker systems |
Oct. 29, 1985 |
| 4525872 |
Amplifier |
Jun. 25, 1985 |
| 4509615 |
Multi-chamber enclosure for loudspeakers |
Apr. 9, 1985 |
| 4506759 |
Loudspeaker enclosure arrangement for voice communication terminals |
Mar. 26, 1985 |
| 4503930 |
Loudspeaker system |
Mar. 12, 1985 |
| 4487290 |
Light aircraft engine muffler |
Dec. 11, 1984 |
| 4485275 |
Inverted horn loudspeaker |
Nov. 27, 1984 |
| 4482026 |
Loudspeaker enclosure |
Nov. 13, 1984 |
| 4475620 |
Loudspeaker with wall reflex absorber |
Oct. 9, 1984 |
| 4474258 |
Loudspeaker enclosure and waveform energy reflector |
Oct. 2, 1984 |
| 4454927 |
Reentrant cone driven loudspeaker |
Jun. 19, 1984 |
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