US2562377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical slit scanning unit for film reproducing systems
Assignee: AT&T Inc
•
Filing: 1949-07-07
•
Granted: 1951-07-31
•
Expires: 1969-07-07
Abstract
No abstract record available.
Inventors
- 👤 George R Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:34
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/002; G11B7/003; G11B7/12; G11B7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1781550A
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US1987205A
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US2021232A
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US2223334A
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US2417227A
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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) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |