US2557070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear simultaneous equation solver
Assignee: Consolidated Engineering Co Inc
•
Filing: 1945-08-13
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Granted: 1951-06-19
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Expires: 1965-08-13
Abstract
No abstract record available.
Inventors
- 👤 Clifford E Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:18
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/32; G06G7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2401779A
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US2408081A
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US2469627A
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US2459106A
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US2468150A
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US2446191A
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US2454549A
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US2455974A
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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) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |