Patent US3490835A successfully refreshed from Google Patents.
US3490835A
Expired / Lapsed
US
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Automatic film exposure system for motion picture cameras
Assignee: Photo Electronics Corp
•
Filing: 1966-09-20
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Granted: 1970-01-20
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Expires: 1986-09-20
Abstract
No abstract record available.
Inventors
- 👤 Otto R Nemeth
- 👤 Robert Auguste
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:30
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/10; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/91; Y10S388/915; Y10S388/923; Y10S388/933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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US3205803A
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US3313224A
Cited
US3277803A
Cited
US3363967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |