Patent US3236351A successfully refreshed from Google Patents.
US3236351A
Expired / Lapsed
US
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High speed matrix printer
Assignee: International Business Machines Corp
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Filing: 1961-12-05
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Granted: 1966-02-22
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Expires: 1981-12-05
Abstract
No abstract record available.
Inventors
- 👤 Clyde J Fitch
- 👤 Saltz Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:45
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/22; B41J2/23; B41J2/27
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2708020A
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US2773443A
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US2831424A
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US2802414A
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US2884852A
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US2909996A
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US2911085A
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US2997152A
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US3135195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |