Interesting Old Patents

A patent for which enables a voice to be heard via the radio hearing effect that sounds like real life (not just like a sound recording in your brain)

Patent Number: 4877027

Patent Date: Oct. 31, 1989

Added to IOP: May 15, 2024, 12:47 a.m.

A non-specific sound is caused as a "sensation of hearing" in someone's head with microwave radio waves resonating in the auditory cortex.

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