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BS 3171:1959 | 23 Nov 1959 | BSI Knowledge
Standard
Withdrawn
BS 3171:1959
Characteristics & method of test of air conduction hearing aids using electronic amplification
Published:
23 Nov 1959
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Withdrawn:
22 Mar 2022
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ICS Codes
11.180.15 Aids for deaf and hearing impaired people
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BSI