Patent US2573150A successfully refreshed from Google Patents.
US2573150A
Expired / Lapsed
US
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Frequency divider
Assignee: AT&T Inc
•
Filing: 1946-02-28
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Granted: 1951-10-30
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Expires: 1966-02-28
Abstract
No abstract record available.
Inventors
- 👤 Lester Y Lacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:52
CPC Classifications
H; H03; H03K; H03K25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2260933A
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US2268872A
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US2403557A
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US2413440A
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US2416158A
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GB566200A
Cited
US2411648A
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US2411573A
Cited
US2415567A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |