Patent US2848537A successfully refreshed from Google Patents.
US2848537A
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Highly noise-immune synchronizing system
Assignee: Hazeltine Research Inc
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Filing: 1952-12-31
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Granted: 1958-08-19
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Expires: 1972-12-31
Abstract
No abstract record available.
Inventors
- 👤 Richman Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:25
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/44; H04N9/455; H03; H03D; H03D13/00; H03D13/007; H04J; H04J9/00
Claims Analysis
Total Claims: 0
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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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |