US2536955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic accounting machine
Assignee: International Business Machines Corp
•
Filing: 1944-12-27
•
Granted: 1951-01-02
•
Expires: 1964-12-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Palmer
- 👤 Byron E Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:11
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/498; G06F7/4981; G06C; G06C11/00; G06C11/08; H; H03; H03K; H03K23/00; H03K23/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1866995A
Cited
US1880422A
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US2170543A
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US2156969A
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US2158285A
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US2402988A
Cited
US2342753A
Cited
US2373134A
Cited
US2418521A
Cited
US2398771A
Cited
US2442428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |