US2495476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wearable electronic hearing aid having a unitary casing for the batteries and the amplifier
Assignee: Beltone Hearing Aid Co
•
Filing: 1946-07-25
•
Granted: 1950-01-24
•
Expires: 1966-07-25
Abstract
No abstract record available.
Inventors
- 👤 Posen Sam
- 👤 Harvey E Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US675390A
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US1647141A
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US2109189A
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US2176671A
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US2308270A
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US2300617A
Cited
US2333028A
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US2409481A
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US2424422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |