Patent US3485168A successfully refreshed from Google Patents.
US3485168A
Expired / Lapsed
US
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Method for forming written symbols to be read by automatic character recognition equipment
Assignee: Meredith Publishing Co
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Filing: 1967-02-20
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Granted: 1969-12-23
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Expires: 1987-02-20
Abstract
No abstract record available.
Inventors
- 👤 John L Martinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:00
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)
US1165663A
Cited
US2038516A
Cited
US2735617A
Cited
US2963220A
Cited
GB851604A
Cited
US3242855A
Cited
US3363338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |