US3605588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera with electronically controlled lens diapharagm
Assignee: Eastman Kodak Co
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Filing: 1968-11-29
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Granted: 1971-09-20
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Expires: 1988-11-29
Abstract
Abstract IN ORDER TO MINIMIZE THE SIZE OF THE POWER SUPPLY FOR AN ELECTROMAGNETIC EXPOSURE CONTROL, THE PULL-IN SOLENOID CURRENT IS SUPPLIED BY A CAPACITOR, WHILE THE HOLDING CURRENT, WHICH IS SUBSTANTIALLY LESS THAN THE PULLING CURRENT, IS SUPPLIED CONVENTIONALLY.
Inventors
- 👤 Wolfgang Ort
- 👤 Clemens Hopfner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:24
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |