US2431017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record card
Assignee: International Business Machines Corp
•
Filing: 1944-03-04
•
Granted: 1947-11-18
•
Expires: 1964-03-04
Abstract
No abstract record available.
Inventors
- 👤 Waldemar A Ayres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:48
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1478691A
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US1567325A
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US1978967A
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US2084848A
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US2107008A
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US2158749A
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US2273740A
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US2366827A
Cited
US2246969A
Cited
US2265419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |