US2425400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High aperture collimating lens system
Assignee: Eastman Kodak Co
•
Filing: 1943-11-27
•
Granted: 1947-08-12
•
Expires: 1963-11-27
Abstract
No abstract record available.
Inventors
- 👤 Schade Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:25
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2160202A
Cited
US1476717A
Cited
US1539579A
Cited
US1610532A
Cited
US1910115A
Cited
FR679047A
Cited
US1897262A
Cited
US2003881A
Cited
US2050024A
Cited
US2206155A
Cited
US2324081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |