Patent US2727194A successfully refreshed from Google Patents.
US3471832A
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US
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Character recognition apparatus
Assignee: International Business Machines Corp
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Filing: 1965-07-06
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Granted: 1969-10-07
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Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Pawletko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; G; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184; G06V; G06V10/00; G06V10/10; G06V30/00; G06V30/10; G06V30/22; G06V30/224; G06V30/2247; H03F; H03F1/00; H03F1/32
Claims Analysis
Total Claims: 0
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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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |