US2580740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accounting apparatus
Assignee: International Business Machines Corp
•
Filing: 1940-01-20
•
Granted: 1952-01-01
•
Expires: 1960-01-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/498; G06F7/4981; G06F3/00; G06F3/06; G06F3/14; G06F3/153; G06K; G06K13/00; G06K13/18; G09; G09G; G09G1/00; G09G1/06; G09G1/14; G09G1/18; G11; G11C; G11C11/00; G11C11/56; H; H03; H03K; H03K23/00; H03K23/82
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |