US2888562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency control system
Assignee: RCA Corp
•
Filing: 1956-05-10
•
Granted: 1959-05-26
•
Expires: 1976-05-10
Abstract
No abstract record available.
Inventors
- 👤 Harris A Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:37
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/16; H03L7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2574482A
Cited
US2617039A
Cited
US2581594A
Cited
US2648006A
Cited
US2761065A
Cited
US2777064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |