Patent US2889535A successfully refreshed from Google Patents.
US2889535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recognition of recorded intelligence
Assignee: International Business Machines Corp
•
Filing: 1955-10-20
•
Granted: 1959-06-02
•
Expires: 1975-10-20
Abstract
No abstract record available.
Inventors
- 👤 Rochester Nathaniel
- 👤 Jacob R Johnson
- 👤 Gene M Amdahl
- 👤 Walter E Mutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:23
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/40; G06V10/44; G06V30/00; G06V30/10
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |