Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 181/197
Name: Acoustics > Sound-modifying means > Within tubular means > Adjustable
Description: Subject matter wherein the sound modifying structure can be altered or moved within the tubular member.

Patents under this class:

Patent Number Title Of Patent Date Issued
8511422 Flexible multiple speaker support apparatus Aug. 20, 2013
8453788 Implementing dynamic noise elimination with acoustic frame design Jun. 4, 2013
8340337 Loudspeaker module Dec. 25, 2012
7886867 Flexible multiple speaker support apparatus Feb. 15, 2011
7533760 Noise reduction tubes May. 19, 2009
7497300 Noise reduction tubes Mar. 3, 2009
7350618 Multimedia speaker product Apr. 1, 2008
6810127 Clear sound side fill center fill Oct. 26, 2004
6724904 Microphone mounting assembly Apr. 20, 2004
5721401 Sub-woofer module Feb. 24, 1998
5450495 Loudspeaker system Sep. 12, 1995
5309808 Acoustic practice mute May. 10, 1994

  Recently Added Patents
Squib control circuit
Optimization of packaging sizes
Image heating device
Steering lock driving circuit and steering lock device
Collaborative image capture
Biaxially oriented film which could be thermally laminated with paper and other substrates
Vehicle fender
  Randomly Featured Patents
Manually powered water skis
Microconverter and laminated magnetic-core inductor
Portable x-ray diagnostics apparatus having a height-adjustable column
Variable light source device for pointer-type meter
Production worthy interconnect process for deep sub-half micrometer back-end-of-line technology
Drapery fixture
Cut-off device for a textile machine
Anti-androgenic pyrrolidines with tumor-inhibiting action
Permanent magnet rotor with saturable flux bridges
Method of measuring residual cancer and predicting patient survival