Sonotone (hearing aid)

Sonotone Corporation was a hearing aid manufacturer that was started by Hugo Leiber, inventor of the bone conduction receiver,^[1]^{[secondary source needed]} 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.

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 cadminum batteries, loudspeakers, and hand held microphones,

References

^ [1], "Wearable bone-conduction hearing aid", issued 1939-03-22
^ Russell, Roger. "Sonotone Corporation History".{{cite web}}: CS1 maint: url-status (link)
^ "1952: TRANSISTORIZED CONSUMER PRODUCTS APPEAR". ComputerHistory.org.{{cite web}}: CS1 maint: url-status (link)

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[1] [1], "Wearable bone-conduction hearing aid", issued 1939-03-22

[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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