US2630482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuned vibrating reed selective circuit
Assignee: AT&T Inc
•
Filing: 1948-07-10
•
Granted: 1953-03-03
•
Expires: 1968-07-10
Abstract
No abstract record available.
Inventors
- 👤 Lee G Bostwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:41
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1637442A
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US1718497A
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US1866267A
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US1723864A
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US2050629A
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US2148578A
Cited
GB576719A
Cited
US2410076A
Cited
US2437315A
Cited
US2457149A
Cited
US2478361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |