US2921740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binary incremental slope computer
Assignee: Northrop Grumman Corp
•
Filing: 1949-12-19
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Granted: 1960-01-19
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Expires: 1969-12-19
Abstract
No abstract record available.
Inventors
- 👤 Willis E Dobbins
- 👤 Charles R Williams
- 👤 Hrant H Sarkissian
- 👤 Donald E Eckdahl
- 👤 Floyd G Steele
- 👤 Jr Albert E Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:57
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/60; G06F7/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |