US2588375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic accounting device
Assignee: AT&T Inc
•
Filing: 1949-06-24
•
Granted: 1952-03-11
•
Expires: 1969-06-24
Abstract
No abstract record available.
Inventors
- 👤 Erlon W Flint
- 👤 Alfred E Hague
- 👤 Jr Amos E Joel
- 👤 Robert O Rippere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:09
CPC Classifications
G; G06; G06Q; G06Q30/00; G06Q30/04; G06K; G06K1/00; G06K1/14; G06Q40/00; G06Q40/02; G06Q40/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |