AU2871163A - Improvements in or relating to electrical devices comprising an amplifier anda supply battery, more particularly hearing-aids
- Google Patents
Improvements in or relating to electrical devices comprising an amplifier anda supply battery, more particularly hearing-aids
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
JOHAN VIERS and HENDRICKS JOHANNES HUBERTUS WAEGEMAKERS PIETER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Application grantedgrantedCritical
Publication of AU274864B2publicationCriticalpatent/AU274864B2/en
Publication of AU2871163ApublicationCriticalpatent/AU2871163A/en
AU28711/63A1962-03-271963-03-25Improvements in or relating to electrical devices comprising an amplifier anda supply battery, more particularly hearing-aids
ExpiredAU274864B2
(en)