US2503714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter holder for projectors
Assignee: Eastman Kodak Co
•
Filing: 1948-12-08
•
Granted: 1950-04-11
•
Expires: 1968-12-08
Abstract
No abstract record available.
Inventors
- 👤 John H Eagle
- 👤 Howard P Caudle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:11
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1116069A
Cited
US1613562A
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US1754282A
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US2009145A
Cited
US2059361A
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US2255319A
Cited
US2248210A
Cited
US2294585A
Cited
US2399577A
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 |