A TELEPHONE FOR THE USE OF PEOPLE WHO ARE PARTIALLY DEAF. The battery on the corner of the table is connected to the ear-piece by a short wire. With this instrument in place, a man who is partially deaf can hear the ordinary conversation going on in the room.
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https://paperspast.natlib.govt.nz/periodicals/NZGRAP19101102.2.48.4
Bibliographic details
New Zealand Graphic, Volume XLV, Issue 18, 2 November 1910, Page 33
Word Count
49A TELEPHONE FOR THE USE OF PEOPLE WHO ARE PARTIALLY DEAF. The battery on the corner of the table is connected to the ear-piece by a short wire. With this instrument in place, a man who is partially deaf can hear the ordinary conversation going on in the room. New Zealand Graphic, Volume XLV, Issue 18, 2 November 1910, Page 33
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Acknowledgements
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