Patent US2532718A successfully refreshed from Google Patents.
US2532718A
Expired / Lapsed
US
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Coordinate selecting and lockout circuit
Assignee: AT&T Inc
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Filing: 1949-04-27
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Granted: 1950-12-05
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Expires: 1969-04-27
Abstract
No abstract record available.
Inventors
- 👤 Hecht George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:23
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2099065A
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US2146862A
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US2308778A
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US2317471A
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US2398771A
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US2411441A
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US2438492A
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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) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |