US2931022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spot sequential character generator
Assignee: International Business Machines Corp
•
Filing: 1954-06-16
•
Granted: 1960-03-29
•
Expires: 1974-06-16
Abstract
No abstract record available.
Inventors
- 👤 William E Triest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:53
CPC Classifications
H; H03; H03M; H03M1/00; G; G09; G09G; G09G1/00; G09G1/06; G09G1/08; G09G1/10; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2552761A
Cited
US2553170A
Cited
US2594731A
Cited
US2784251A
Cited
US2754360A
Cited
US2736770A
Cited
US2679035A
Cited
US2766444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |