US2683219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-frequency relaxation oscillator
Assignee: AT&T Inc
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Filing: 1951-08-28
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Granted: 1954-07-06
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Expires: 1971-08-28
Abstract
No abstract record available.
Inventors
- 👤 Milton E Mohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:03
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/05; H03K3/06; H03K3/08; G; G01; G01R; G01R27/00; G01R27/28; G01R27/32; G10; G10L; G10L21/00; G10L21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2465355A
Cited
US2500356A
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US2518499A
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US2580083A
Cited
US2562694A
Cited
US2577074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |