US2683802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse selecting circuits
Assignee: National Research Development Corp UK
•
Filing: 1949-12-12
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Granted: 1954-07-13
•
Expires: 1969-12-12
Abstract
No abstract record available.
Inventors
- 👤 Frederic C Williams
- 👤 Arthur A Robinson
- 👤 Kilburn Tom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/50; G06F7/504; G06F1/00; G06F1/04; G06F1/08; H; H03; H03K; H03K17/00; H03K17/51; H03K17/54; H04; H04J; H04J3/00; H04N; H04N5/00; H04N5/04; H04N5/06; H04N5/067; H04N5/073
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) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |