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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 |
| 5082084 |
Extensible sound case |
Jan. 21, 1992 |
| 5056618 |
Loudspeaker housing |
Oct. 15, 1991 |
| 5025885 |
Multiple chamber loudspeaker system |
Jun. 25, 1991 |
| 5012889 |
Speaker enclosure |
May. 7, 1991 |
| 5012890 |
Acoustic apparatus |
May. 7, 1991 |
| 5010977 |
Acoustic apparatus with plural resonators having different resonance frequencies |
Apr. 30, 1991 |
| 5000286 |
Modular loudspeaker system |
Mar. 19, 1991 |
| 4997057 |
Method and apparatus of expanding acoustic reproduction range |
Mar. 5, 1991 |
| 4993510 |
Mobile speaker fixing device |
Feb. 19, 1991 |
| 4991688 |
Audio speaker system |
Feb. 12, 1991 |
| 4979586 |
Acoustically shielded motorcycle helmet speaker enclosure |
Dec. 25, 1990 |
| 4977975 |
Vented motorcycle helmet speaker enclosure |
Dec. 18, 1990 |
| 4967872 |
Loud speaker system |
Nov. 6, 1990 |
| 4964482 |
Loudspeaker enclosure |
Oct. 23, 1990 |
| 4957184 |
Loudspeaker enclosure |
Sep. 18, 1990 |
| 4953655 |
Acoustic apparatus |
Sep. 4, 1990 |
| 4949386 |
Speaker system |
Aug. 14, 1990 |
| 4944019 |
Low sound region reproducing speaker system |
Jul. 24, 1990 |
| 4942939 |
Speaker system with folded audio transmission passage |
Jul. 24, 1990 |
| 4940108 |
Open line source speaker system |
Jul. 10, 1990 |
| 4936410 |
Speaker cover |
Jun. 26, 1990 |
| 4928787 |
Mobile speaker system |
May. 29, 1990 |
| 4924964 |
Loudspeaker enclosure |
May. 15, 1990 |
| 4924965 |
Speaker system |
May. 15, 1990 |
| 4924963 |
Compact and efficient sub-woofer system and method for installation in structural partitions |
May. 15, 1990 |
| 4924962 |
Sound reproducing apparatus for use in vehicle |
May. 15, 1990 |
| 4923031 |
High output loudspeaker system |
May. 8, 1990 |
| 4907671 |
Wide dispersion reflector |
Mar. 13, 1990 |
| 4905788 |
Electro-acoustic transducers |
Mar. 6, 1990 |
| 4893695 |
Speaker system |
Jan. 16, 1990 |
| 4890689 |
Omnidirectional speaker system |
Jan. 2, 1990 |
| 4889208 |
Speaker enclosures |
Dec. 26, 1989 |
| 4884655 |
Tower-type speaker cabinet with pivoted plural speaker subassembly |
Dec. 5, 1989 |
| 4882760 |
Sound reproduction system |
Nov. 21, 1989 |
| 4881265 |
Apex loudspeaker |
Nov. 14, 1989 |
| 4875546 |
Loudspeaker with acoustic band-pass filter |
Oct. 24, 1989 |
| 4872527 |
Speaker system |
Oct. 10, 1989 |
| 4869340 |
Very high performance loudspeaker enclosures |
Sep. 26, 1989 |
| 4865153 |
Speaker system |
Sep. 12, 1989 |
| 4850452 |
Loudspeaker structure |
Jul. 25, 1989 |
| 4844198 |
Plane wave focusing lens |
Jul. 4, 1989 |
| 4843624 |
Portable enclosure system for audio equipment |
Jun. 27, 1989 |
| 4836328 |
Omnidirectional acoustic transducer |
Jun. 6, 1989 |
| 4836329 |
Loudspeaker system with wide dispersion baffle |
Jun. 6, 1989 |
| 4836326 |
Optimal shadow omniphonic microphone and loudspeaker system |
Jun. 6, 1989 |
| 4832150 |
Sound-permeable cover for a loudspeaker |
May. 23, 1989 |
| 4819761 |
Tubular loudspeaker system |
Apr. 11, 1989 |
| 4815559 |
Portable loudspeaker apparatus for use in live performances |
Mar. 28, 1989 |
| 4805729 |
Speaker enclosure |
Feb. 21, 1989 |
| 4805730 |
Loudspeaker enclosure |
Feb. 21, 1989 |
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