US2678973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for hearing aid receivers
Assignee: CHARLES E GLASSEN
•
Filing: 1950-10-02
•
Granted: 1954-05-18
•
Expires: 1970-10-02
Abstract
No abstract record available.
Inventors
- 👤 Waldo E Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:19
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/60; H04R25/604; H04R25/606
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2056300A
Cited
US2077426A
Cited
USRE22658E
Cited
US2291942A
Cited
US2611829A
Cited
US2548149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |