Patent US2588023A successfully refreshed from Google Patents.
US2588023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bookkeeping machine
Assignee: —
•
Filing: —
•
Granted: 1952-03-04
•
Expires: 1969-03-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:58
CPC Classifications
G; G06; G06K; G06K17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2057606A
Cited
US2277250A
Cited
US1753991A
Cited
US1930252A
Cited
US2222373A
Cited
US2240667A
Cited
FR883135A
Cited
US2442970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |