Patent US3422405A successfully refreshed from Google Patents.
US3422405A
Expired / Lapsed
US
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Digital computer having an indirect field length operation
Assignee: Unisys Corp
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Filing: 1966-03-25
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Granted: 1969-01-14
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Expires: 1986-03-25
Abstract
No abstract record available.
Inventors
- 👤 Roger E Packard
- 👤 Donald E Knuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:41
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; G06F9/30181; G06F9/30192; G06F9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3319226A
Cited
US3331056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |