Patent US3916380A successfully refreshed from Google Patents.
US2919425A
Expired / Lapsed
US
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Reading apparatus
Assignee: International Business Machines Corp
•
Filing: 1953-12-30
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Granted: 1959-12-29
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Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas I Ress
- 👤 Evon C Greanias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:52
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2754360A
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US2685615A
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US2702380A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |