Sonotone (hearing aid)

Sonotone Corporation was a hearing aid manufacturer that was started by Hugo Leiber, inventor of the bone conduction receiver,[1] in New York City in 1929. It was a leader in the hearing aid industry until multiple buyouts ending in 1970 led to the abandonment of the manufacturing plant.[2] It was temporarily revived in 1987 but had closed again by 2005.

Battery compartment of a Sonotone 77 hearing aid.

Notable models of Sonotone hearing aids include the Sonotone 1010 in 1952 with a transistor and two vacuum tubes.[3]

By 1960, in addition to hearing aids, Sonotone manufactured nickel cadmium batteries, loudspeakers, and hand held microphones.

References
Wikimedia Commons has media related to Sonotone.
  1. US 2249572, Lieber, Hugo, "Wearable bone-conduction hearing aid", published 1941-07-15, assigned to Lieber Patents Corp.
  2. Russell, Roger. "Sonotone Corporation History".{{cite web}}: CS1 maint: url-status (link)
  3. "1952: TRANSISTORIZED CONSUMER PRODUCTS APPEAR". ComputerHistory.org.{{cite web}}: CS1 maint: url-status (link)


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