Patent US2703380A successfully refreshed from Google Patents.
US2703380A
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Phase comparison apparatus for data transmission systems
Assignee: Unisys Corp
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Filing: 1949-09-21
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Granted: 1955-03-01
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Expires: 1969-09-21
Abstract
No abstract record available.
Inventors
- 👤 Fraser Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:35
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1436; G01; G01R; G01R25/00; G01R25/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2432778A
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US2411876A
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US2467361A
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US2595675A
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US2423229A
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US2562329A
Cited
US2588094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |