Patent US3084221A successfully refreshed from Google Patents.
US3084221A
Expired / Lapsed
US
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Speech aid
Assignee: LANCASTER CLEFT PALATE CLINIC Inc
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Filing: 1959-03-26
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Granted: 1963-04-02
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Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Herbert K Cooper
- 👤 Hofmann Frederic Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
IN A SPEECH AID HAVING A SOUND EMITTER, A GENERATOR SUPPLYING TO SAID EMITTER A WAVE-FORM ELECTRICAL SIGNAL AT AUDIBLE FREQUENCY WITHIN THE NORMAL VOCAL RANGE OF FREQUENCIES, AND AN ELECTRICAL CIRCUIT IN WHICH SAID EMITTER AND GENERATOR ARE INCLUDED, A BITE BLOCK ADAPTED TO BE GRIPPED BETWEEN THE TEETH, SAID EMITTER BEING DISPOSED EXTERNALLY OF THE TEETH, AND MEANS EXTENDING THROUGH SAID BITE BLOCK AND THENCE REARWARDLY TO THE REAR PORTION OF SAID MOUTH CAVITY, AND AFFORDING A SOUND PASSAGE BETWEEN SAID EMITTER AND THE REAR PORTION OF SAID MOUTH CAVITY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |