US3519990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recognition system for reading machine
Assignee: Control Data Corp
•
Filing: 1966-09-15
•
Granted: 1970-07-07
•
Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Holt
- 👤 James D Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:22
CPC Classifications
G; G06; G06V; G06V30/00; G06V30/10; G06V30/14; G06V30/148; G06V30/158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2935619A
Cited
US3114132A
Cited
US3112469A
Cited
US3111645A
Cited
US3102995A
Cited
US3111646A
Cited
US3123804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |