US2955756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serial word checking circuit
Assignee: International Business Machines Corp
•
Filing: 1955-12-09
•
Granted: 1960-10-11
•
Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
- 👤 Robert A Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F11/1008; G06F11/1012; G06F11/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1972326A
Cited
US2521774A
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US2621854A
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US2634052A
Cited
USRE23601E
Cited
US2765982A
Cited
US2653996A
Cited
US2596199A
Cited
US2689950A
Cited
US2826359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |