US3036770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Error detecting system for a digital computer
Assignee: International Business Machines Corp
•
Filing: 1958-08-05
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Granted: 1962-05-29
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Expires: 1978-08-05
Abstract
No abstract record available.
Inventors
- 👤 Donald A Harrison
- 👤 James J Selfridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:16
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/50; G06F7/501; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F7/52; G06F7/535; G06F7/57; G06F7/575
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |