Survey of patented anti-stuttering devices.
Various types of devices have been patented to alleviate stuttering. Some prevent certain physical actions, such as clamping of the teeth, improper movement of the tounge and improper breathing. Others strengthen or incapacitate certain muscles. The devices and their alleged action on the body are described. United States as well as foreign patents are included. No attempt has been made to evaluate said devices
D005060:Europe; D049671:History, 18th Century; D049673:History, 20th Century; D006801:Humans; D010330:Patents as Topic / Q000266:history*; D013070:Speech Therapy / Q000295:instrumentation*; D013342:Stuttering / Q000266:history*; D014481:United States