US2683402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocell control system for camera diaphragms
Assignee: Specialties Inc
•
Filing: 1950-05-24
•
Granted: 1954-07-13
•
Expires: 1970-05-24
Abstract
No abstract record available.
Inventors
- 👤 George G Bruck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:04
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)
US1919182A
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US2100755A
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US2156440A
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US2326853A
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US2297262A
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US2421476A
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US2412424A
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US2417506A
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US2420058A
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US2434101A
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US2453693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |