US2946394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-conduction hearing aid clamps
Assignee: Individual
•
Filing: 1954-01-18
•
Granted: 1960-07-26
•
Expires: 1974-01-18
Abstract
No abstract record available.
Inventors
- 👤 Alonzo L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:48
CPC Classifications
G; G02; G02C; G02C11/00; G02C11/06; H; H04; H04R; H04R25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE344526C
Cited
US404868A
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US1096024A
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FR537556A
Cited
US1975490A
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US2207705A
Cited
US2215585A
Cited
GB541226A
Cited
US2437490A
Cited
US2503275A
Cited
US2513746A
Cited
US2566313A
Cited
US2792457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |