Patent US3380031A successfully refreshed from Google Patents.
US3380031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote calculator
Assignee: Control Data Corp
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Filing: 1965-08-10
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Granted: 1968-04-23
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Expires: 1985-08-10
Abstract
No abstract record available.
Inventors
- 👤 Clayton Billy Burke
- 👤 Fagen Robert Ernest
- 👤 Marshman Wilbur Wood
- 👤 Wolbrecht Horace Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/048; G06F3/0487; G06F3/0489; G06F13/00; G06F13/14; G06F13/20; G06F13/22
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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |