US3702123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vented hearing aid ear mold
Assignee: Individual
•
Filing: 1971-09-09
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Granted: 1972-11-07
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Expires: 1991-09-09
Abstract
Abstract AN ADJUSTABLE VENTED EAR MOLD ASSEMBLY FOR USE WITH HEARING AIDS, AND THE LIKE SAID EAR MOLD ASSEMBLY INCLUDING AN ACOUSTICAL VALVE WITH MEANS PROVIDING AN INDINITE NUMBER OF ADJUSTMENTS OR TUNING SETTINGS BY A WEARER TO ACHIEVE THE MOST DESIRABLE ACOUSTIC RESULTS,
Inventors
- 👤 John T Macken
- 👤 Albert H Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:48
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/65; H04R25/652; H04R2460/00; H04R2460/11; H04R25/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |