US2701309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor oscillation generator
Assignee: AT&T Inc
•
Filing: 1948-12-24
•
Granted: 1955-02-01
•
Expires: 1968-12-24
Abstract
No abstract record available.
Inventors
- 👤 Harold L Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:59
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203; H03B5/1231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1624537A
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US1745175A
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US1900018A
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US1976570A
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US1896781A
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US2115858A
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US2245718A
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US2411565A
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US2469569A
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US2524035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |