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US2412424A
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Photoelectric control device for camera diaphragms
Assignee: Individual
•
Filing: 1944-05-12
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Granted: 1946-12-10
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Expires: 1964-05-12
Abstract
No abstract record available.
Inventors
- 👤 Rath Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:20
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/081; G03B7/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-12-09 | 1950-06-10 | 1950-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-09 | 1954-06-10 | 1954-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-09 | 1958-06-10 | 1958-12-10 | $7700.00 | Window Closed / Lapsed |