US2782256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing circuits
Assignee: AT&T Inc
•
Filing: 1953-03-05
•
Granted: 1957-02-19
•
Expires: 1973-03-05
Abstract
No abstract record available.
Inventors
- 👤 William A Malthaner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:57
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/08; H04M3/12; H04M3/22; H04M3/36; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04M2201/00; H04M2201/08; H04M2201/10; H04Q2213/00; H04Q2213/1302; H04Q2213/1304
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |