US2985067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enlargement indicators for photographic enlarging and reproducing apparatuses
Assignee: Kamera und Kinowerke Dresden VEB
•
Filing: 1957-11-13
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Granted: 1961-05-23
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Expires: 1977-11-13
Abstract
No abstract record available.
Inventors
- 👤 Hauptvogel Herbert
- 👤 Korf Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:57
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE695853C
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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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |