Patent US2343539A successfully refreshed from Google Patents.
US2343539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized oscillator
Assignee: AT&T Inc
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Filing: 1942-01-16
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Granted: 1944-03-07
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Expires: 1962-01-16
Abstract
No abstract record available.
Inventors
- 👤 William A Edson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:53
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/14; H03B5/16
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) | 1947-03-07 | 1947-09-06 | 1948-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-03-07 | 1951-09-06 | 1952-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-03-07 | 1955-09-06 | 1956-03-07 | $7700.00 | Window Closed / Lapsed |