Patent US2227492A successfully refreshed from Google Patents.
US2434500A
Expired / Lapsed
US
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Accounting machine
Assignee: International Business Machines Corp
•
Filing: 1945-06-14
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Granted: 1948-01-13
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Expires: 1965-06-14
Abstract
No abstract record available.
Inventors
- 👤 Leathers Ward
- 👤 Haddad Jerrier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:50
CPC Classifications
G; G06; G06C; G06C11/00; G06C11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1834561A
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US2178064A
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US2034260A
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US2045437A
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US2176933A
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US2285353A
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US2332304A
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US2288520A
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US2352027A
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US2314718A
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US2386482A
Cited
US2393386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |