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Class Information
Number: 181/190
Name: Acoustics > Sound-modifying means > Intensifying horn > Multisection housing > Separable
Description: Subject matter wherein means are provided which permit the units to be detached from each other.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6724904 |
Microphone mounting assembly |
Apr. 20, 2004 |
| 6604602 |
Separable speaker cover box containing speaker system |
Aug. 12, 2003 |
| 6035962 |
Easily-combinable and movable speaker case |
Mar. 14, 2000 |
| 5675133 |
Horn and sounder |
Oct. 7, 1997 |
| 5631450 |
Megaphone |
May. 20, 1997 |
| 5179255 |
Baseball bat having the functions of resonators and microphones |
Jan. 12, 1993 |
| 5094317 |
Two-piece megaphone with ornamental member |
Mar. 10, 1992 |
| 5004067 |
Cinema sound system for unperforated screens |
Apr. 2, 1991 |
| 4984653 |
Loudspeaker arrangement |
Jan. 15, 1991 |
| 4967684 |
Warning device |
Nov. 6, 1990 |
| 4878561 |
Sound emitter |
Nov. 7, 1989 |
| 4525604 |
Horn loudspeaker with convex diaphragm |
Jun. 25, 1985 |
| 4447678 |
Electracoustic transducer |
May. 8, 1984 |
| 4390078 |
Loudspeaker horn |
Jun. 28, 1983 |
| 4283457 |
Laminate structures for acoustical applications and method of making them |
Aug. 11, 1981 |
| 4187926 |
Loudspeaker horn |
Feb. 12, 1980 |
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