US3419852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Input/output control system for electronic computers
Assignee: Unisys Corp
•
Filing: 1966-02-14
•
Granted: 1968-12-31
•
Expires: 1986-02-14
Abstract
No abstract record available.
Inventors
- 👤 Hans B Marx
- 👤 Bruce W Nutting
- 👤 Marra Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:28
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/46; G06F9/48; G06F9/4806; G06F9/4812; G06F13/00; G06F13/10; G06F13/12; G06F13/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2910238A
Cited
US3222647A
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US3133268A
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US3235879A
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US3281793A
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US3286240A
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US3258749A
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US3305839A
Cited
US3293612A
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US3297996A
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US3308439A
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US3308443A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |