Patent US2093087A successfully refreshed from Google Patents.
US3209082A
Expired / Lapsed
US
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Hearing aid
Assignee: Beltone Electronics Corp
•
Filing: 1962-08-16
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Granted: 1965-09-28
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Expires: 1982-08-16
Abstract
No abstract record available.
Inventors
- 👤 Stuart G Mccarrell
- 👤 Harry A Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:49
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/60; H04R25/604; H04R25/606; H04R25/02; H04R25/45; H04R25/456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2493734A
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US2754373A
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US2967913A
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US2959645A
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US2957954A
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US3061689A
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US2987584A
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US2975389A
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US3025359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |