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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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