Norman Lederman resumes & CV records
Resumes
Norman L Lederman, Age 7233 Wildflower Ct, Nederland, CO 80466
Norman Lederman Phones & Addresses
33 Wildflower Ct, Nederland, CO 80466 (303) 449-2202
Yarmouth, ME
Atlanta, GA
Portland, ME
Social networks
Norman L Lederman
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Mentions for Norman L Lederman
Publications & IP owners
Us Patents
Induction-Based Assistive Listening System
US Patent:
4908869, Mar 13, 1990
Filed:
May 9, 1989
Appl. No.:
7/349515
Inventors:
Norman Lederman - Yarmouth ME
International Classification:
H04B 500
US Classification:
381 79
Abstract:
A multiple-loop magnetic induction system for improving communication with the hearing-impaired or to people in general who wish to listen privately to speech or music while being in the company of others or at a public location. The invention uses a particular grid made up of several electrical conductors as a means of generating an audio-frequency magnetic field which in turn couples to the telephone coils already present in most hearing aid units. The audio-frequency magnetic field is correlated to sound waveforms--speech, music, etc. --which is to be communicated. The grid configuration is selected so as to produce an end signal which is substantially independent of the location and the orientation of the hearing aid device within the area of the grid and which falls off precipitously outside of the region defined by the grid. The conductors which make up the grid configuration are enveloped in a flexible, lightweight matting which can be unrolled in the area to be addressed.
Isbn (Books And Publications)
Constructing Science In Elementary Classrooms
Author:
Norman G. Lederman
ISBN #:
0801330904
Handbook Of Research On Science Education
Author:
Norman G. Lederman
ISBN #:
0805847138
Handbook Of Research On Science Education
Author:
Norman G. Lederman
ISBN #:
0805847146
Science Teaching In A Changing Society: Grades 6-12 Science And Technology As Human Enterprises
Author:
Norman G. Lederman
ISBN #:
0840357311
Examining Pedagogical Content Knowledge: The Construct And Its Implications For Science Education
Author:
Norman G. Lederman
ISBN #:
0792359038
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