US2455763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interferometric light valve
Assignee: Eastman Kodak Co
•
Filing: 1945-03-31
•
Granted: 1948-12-07
•
Expires: 1965-03-31
Abstract
No abstract record available.
Inventors
- 👤 Harrison Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:06
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/21
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |