1976-12-30
1978-02-14
Grieb, William H.
G09B 1904
Patent
active
040730719
ABSTRACT:
A human mouth model for speech therapy instruction including a transparent upper jaw portion including a hard palate portion, soft palate portion, gums, and a set of upper teeth; a transparent lower jaw portion including a mouth floor, gums, and a set of lower teeth; an opening formed by the rearward ends of the jaw portions in the area of the oral part of the pharynx; and hinge means interconnecting the rearward ends of the jaw portions.
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patent: 3931679 (1976-01-01), Carter
Grieb William H.
Iandiorio Joseph S.
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