IEC 60090:1957
Recommendations for the dimensions of polarized plugs for hearing aids
Applies to two-pin polarized and three-pin plugs for hearing aids. Gives dimensions and tolerances to ensure interchangeability.
Nombre de publication: 60090
Édition: 1.0
Langue: en
Date de circulation: 1957-01-01
Codes ICS : 17.140.50; 31.220.10;
Numéro de la norme : IEC 60090:1957