US2626980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic curve tracer
Assignee: AT&T Inc
•
Filing: 1948-10-06
•
Granted: 1953-01-27
•
Expires: 1968-10-06
Abstract
No abstract record available.
Inventors
- 👤 John W Balde
- 👤 Joseph C Bregar
- 👤 Kenneth L Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/28; G01R27/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2195853A
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US2297436A
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US2293135A
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US2432196A
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US2297393A
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US2356510A
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US2380791A
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US2414479A
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US2465355A
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US2534957A
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US2522239A
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US2548276A
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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) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |