US2908343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hearing aid ear-piece gasket
Assignee: Individual
•
Filing: 1957-05-10
•
Granted: 1959-10-13
•
Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Hummert Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:21
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/65; H04R25/652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US411160A
Cited
DE327428C
Cited
CH8197A
Cited
US702800A
Cited
US843362A
Cited
US887645A
Cited
US2535258A
Cited
US2763334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |