Patent US2776428A successfully refreshed from Google Patents.
US2776428A
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US
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Signal phase-correcting system
Assignee: Unisys Corp
•
Filing: 1953-02-13
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Granted: 1957-01-01
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Expires: 1973-02-13
Abstract
No abstract record available.
Inventors
- 👤 Norman A Hassler
- 👤 Harry R Jurman
- 👤 Caesar F Fragola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:54
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816; G05D1/085; G05D1/02; G05D1/0202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB516567A
Cited
US2592173A
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US2634925A
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US2613350A
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US2643354A
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US2548278A
Cited
US2613352A
Cited
US2632142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |