US2533441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide changing device
Assignee: Eastman Kodak Co
•
Filing: 1948-04-02
•
Granted: 1950-12-12
•
Expires: 1968-04-02
Abstract
No abstract record available.
Inventors
- 👤 Cameron B Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:51
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US306528A
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US926662A
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US1093401A
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US2213779A
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US2442365A
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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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |