US3048332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Program interrupt system
Assignee: International Business Machines Corp
•
Filing: 1957-12-09
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Granted: 1962-08-07
•
Expires: 1977-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick P Brooks
- 👤 Dura W Sweeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/46; G06F9/48; G06F9/4806; G06F9/4812; G06F9/4818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2636672A
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US2789759A
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US2615127A
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US2641696A
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US2800277A
Cited
US2954166A
Cited
US2939634A
Cited
US2927732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |