US2990956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: International Business Machines Corp
•
Filing: 1953-12-21
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Granted: 1961-07-04
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Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Wilson
- 👤 George A Luning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:17
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1698844A
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US1665595A
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US1930266A
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US2079422A
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US2123237A
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US2531874A
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US2615569A
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US2616561A
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US2708514A
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US2731263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |