ANSI/ASA S3.37:1987(R2017)
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Preferred Earhook Nozzle Thread for Postauricular Hearing Aids
Hardcopy , PDF
06-09-2020
English
07-12-2017
This standard applies only to those postauricular hearing aids which utilize screw-on threads.
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