US2800278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Number signal analysing means for electronic digital computing machines
Assignee: National Research Development Corp UK
•
Filing: 1951-05-17
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Granted: 1957-07-23
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Expires: 1971-05-17
Abstract
No abstract record available.
Inventors
- 👤 Graham I Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:03
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/74; G06F1/00; G06F1/04; G06F15/00; G06F15/76; G06F15/78; G06F3/00; G06F3/06; G06F3/0601; G11; G11C; G11C11/00; G11C11/21; G11C11/23; G06F3/0668; G06F3/0671; G06F3/0673
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2272070A
Cited
US2414107A
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US2489325A
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US2521774A
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US2560968A
Cited
US2568918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |