US3170139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marker for machine readable documents
Assignee: Control Data Corp
•
Filing: 1962-01-15
•
Granted: 1965-02-16
•
Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Rabinow Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:40
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/98; G06V10/987
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
IN AN OPTICAL READING MACHINE FOR IDENTIFYING PRINTED CHARACTERS ON DOCUMENTS, WHERE THE MACHINE HAS MEANS PROVIDING A SIGNAL WHICH INDICATES A MACHINE-REJECTION OF A CHARACTER; MARKING MEANS, AND MEANS RESPONSIVE TO SAID
Claim 2
Dependent Claim
33 words
IN AN OPTICAL READING MACHINE FOR IDENTIFYING PRINTED CHARACTERS ON DOCUMENTS, WHERE THE MACHINE HAS MEANS PROVIDING A SIGNAL WHICH INDICATES A MACHINE-REJECTION OF A CHARACTER; MARKING MEANS, AND MEANS RESPONSIVE TO SAID
References Cited (Backward Citations)
US2059805A
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US2102577A
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US2328638A
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US2353327A
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US2557964A
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US2581961A
Cited
US2688656A
Cited
US2682573A
Cited
US2799221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |