Patent US3548374A successfully refreshed from Google Patents.
US3548374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Character recognition system
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
•
Filing: 1966-08-30
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Granted: 1970-12-15
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Expires: 1986-08-30
Abstract
No abstract record available.
Inventors
- 👤 Angelo Vaccaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:01
CPC Classifications
G; G06; G06V; G06V30/00; G06V30/10; G06V30/22; G06V30/224; G06V30/2247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2961649A
Cited
US3113298A
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US3283303A
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US3303469A
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US3309667A
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US3354432A
Cited
US3461427A
Cited
US3286233A
Cited
US3391387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |