Patent US2496683A successfully refreshed from Google Patents.
US2496683A
Expired / Lapsed
US
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Hearing aid chassis and assembly
Assignee: Paravox Inc
•
Filing: 1947-03-06
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Granted: 1950-02-07
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Expires: 1967-03-06
Abstract
No abstract record available.
Inventors
- 👤 Raleigh E Tresise
- 👤 Paul D Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:19
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1688976A
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FR834981A
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US2308550A
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US2306707A
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US2330838A
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US2357274A
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US2327321A
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US2327320A
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US2444302A
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US2406583A
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US2424422A
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US2431198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |