Patent US3162837A successfully refreshed from Google Patents.
US3519991A
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US
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Optical character reading apparatus
Assignee: NEC Corp
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Filing: 1968-02-02
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Granted: 1970-07-07
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Expires: 1988-02-02
Abstract
No abstract record available.
Inventors
- 👤 Hirao Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:19
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/20; G06V10/24; G06V10/40; G06V10/42; G06V10/421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3243776A
Cited
US3305835A
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 |