US2503750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End play eliminating means for lens tubes
Assignee: Eastman Kodak Co
•
Filing: 1947-08-13
•
Granted: 1950-04-11
•
Expires: 1967-08-13
Abstract
No abstract record available.
Inventors
- 👤 Charles M Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18728; Y10T74/19; Y10T74/19623
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US627206A
Cited
US1835503A
Cited
US1848402A
Cited
US1880635A
Cited
US2026724A
Cited
US2101476A
Cited
US2143813A
Cited
US2245241A
Cited
US2271227A
Cited
US2410704A
Cited
US2432479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |