US3000462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-conduction hearing aid clamps
Assignee: Individual
•
Filing: 1960-05-19
•
Granted: 1961-09-19
•
Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Alonzo L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:26
CPC Classifications
G; G02; G02C; G02C11/00; G02C11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2215585A
Cited
US2437490A
Cited
US2503275A
Cited
US2566313A
Cited
US2849533A
Cited
US2792457A
Cited
US2640390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |