Patent US3454929A successfully refreshed from Google Patents.
US3454929A
Expired / Lapsed
US
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Computer edit system
Assignee: Unisys Corp
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Filing: 1966-03-25
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Granted: 1969-07-08
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Expires: 1986-03-25
Abstract
No abstract record available.
Inventors
- 👤 Donald P Hynes
- 👤 Donald E Knuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:49
CPC Classifications
G; G06; G06F; G06F3/00; G06F40/00; G06F40/10; G06F40/166; G06F9/00; G06F9/06; G06F9/30; G06F9/30003; G06F9/30007; G06F9/30025; G06F9/30032; G06F9/30145; G06F9/3016; G06F9/30167
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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |