File:Assistive Listening Devices 1.JPG

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Assistive Listening Systems

These systems transmit amplified sound via hearing aids, headsets or other devices. They include infrared, loop and FM systems. Portable systems may be available from the same audiovisual equipment suppliers that service conferences and meetings.
Date
Source State of Rhode Island http://www.cdhh.ri.gov/logo/
Author State of Rhode Island
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See below.

Public domain This file is in the public domain because it comes from the Manual on Uniform Traffic Control Devices, sign number D9-6, which states specifically on page I-1 that:
Any traffic control device design or application provision contained in this Manual shall be considered to be in the public domain. Traffic control devices contained in this Manual shall not be protected by a patent, trademark, or copyright, except for the Interstate Shield and any other items owned by FHWA.

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current15:54, 23 February 2008Thumbnail for version as of 15:54, 23 February 2008900 × 900 (38 KB)Nickel Chromo~commonswiki (talk | contribs){{Information |Description=Assistive Listening Systems<br/> These systems transmit amplified sound via hearing aids, headsets or other devices. They include infrared, loop and FM systems. Portable systems may be available from the same audiovisual equipme

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