US3048668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer suspension system
Assignee: Beltone Hearing Aid Co
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Filing: 1961-04-17
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Granted: 1962-08-07
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Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 Erwin M Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:42
CPC Classifications
G; G02; G02C; G02C11/00; G02C11/06; H; H04; H04R; H04R25/00; H04R25/60; H04R25/604; Y; Y10; Y10S; Y10S206/00; Y10S206/814
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |