Patent US2687473A successfully refreshed from Google Patents.
US2687473A
Expired / Lapsed
US
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Signal cycling device
Assignee: Unisys Corp
•
Filing: 1950-04-13
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Granted: 1954-08-24
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Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Jr John Presper Eckert
- 👤 Albert A Auerbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:59
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2199634A
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US2212173A
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US2487995A
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US2436808A
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US2403561A
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US2432180A
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US2444741A
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US2510987A
Cited
US2503909A
Cited
US2617930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |