US2522266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic receiver
Assignee: Beltone Hearing Aid Co
•
Filing: 1948-05-25
•
Granted: 1950-09-12
•
Expires: 1968-05-25
Abstract
No abstract record available.
Inventors
- 👤 Harvey E Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:04
CPC Classifications
H; H04; H04R; H04R11/00; H04R11/06; H04R25/00; H04R25/65; H04R25/652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1628383A
Cited
US2069817A
Cited
US2086630A
Cited
US2231084A
Cited
US2141820A
Cited
US2249158A
Cited
US2371453A
Cited
US2493734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |