Patent US2764679A successfully refreshed from Google Patents.
US2764679A
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US
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Absolute value system
Assignee: Individual
•
Filing: 1952-08-27
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Granted: 1956-09-25
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Expires: 1972-08-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond S Berkowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:54
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/18; G; G06; G06G; G06G7/00; G06G7/12; G06G7/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB479935A
Cited
US2688077A
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US2419570A
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US2426497A
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US2413023A
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US2517579A
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US2467486A
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US2512495A
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US2566085A
Cited
US2609493A
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US2695330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |