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US2678772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer
Assignee: Librascope Inc
•
Filing: 1949-03-14
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Granted: 1954-05-18
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Expires: 1969-03-14
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Imm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:42
CPC Classifications
G; G06; G06G; G06G3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875019A
Cited
US2044164A
Cited
US2066934A
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US2206875A
Cited
US2199769A
Cited
US2397467A
Cited
GB548093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |