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Class Information
Number: 181/189
Name: Acoustics > Sound-modifying means > Intensifying horn > Multisection housing
Description: Subject matter wherein the structure forming the sound intensifying horn comprises two or more units attached together. Each unit must include part of a given sound path.

Sub-classes under this class:

Class Number Class Name Patents
181/190 Separable 16

Patents under this class:

Patent Number Title Of Patent Date Issued
8515102 Line array loudspeaker Aug. 20, 2013
8224001 Line array loudspeaker Jul. 17, 2012
7519195 Sound system for industrial tool chests Apr. 14, 2009
7350618 Multimedia speaker product Apr. 1, 2008
7113813 Mobile communication terminal and electro-acoustic transducer used for the same Sep. 26, 2006
7095868 Phase plug with optimum aperture shapes Aug. 22, 2006
6931143 Thin enclosure electroacoustical transducing Aug. 16, 2005
6719090 Speaker assembly Apr. 13, 2004
6604602 Separable speaker cover box containing speaker system Aug. 12, 2003
6522759 Speaker Feb. 18, 2003
6513622 Full-range loudspeaker system for cinema screen Feb. 4, 2003
6278789 Frequency selective acoustic waveguide damping Aug. 21, 2001
6035962 Easily-combinable and movable speaker case Mar. 14, 2000
5675133 Horn and sounder Oct. 7, 1997
5659155 Acoustical transducer enclosure Aug. 19, 1997
5631450 Megaphone May. 20, 1997
5606297 Conical ultrasound waveguide Feb. 25, 1997
5397866 Dual acoustic horn assembly Mar. 14, 1995
5160815 Megaphone apparatus Nov. 3, 1992
5046581 Loudspeaker system Sep. 10, 1991
5025887 Sanitary acoustic horn Jun. 25, 1991
4893695 Speaker system Jan. 16, 1990
4776428 Sound projection system Oct. 11, 1988
4369857 Loudspeaker and horn combination Jan. 25, 1983

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