US3310679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maximum or minimum brightness responsive exposure control circuit
Assignee: Applied Biosystems Inc
•
Filing: 1964-03-27
•
Granted: 1967-03-21
•
Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 Richard C Babish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:02
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
APPARATUS FOR USE WITH AN ELECTRICALLY OPERATED CAMERA EXPOSURE CONTROL MECHANISM COMPRISING: A PLURALITY OF PHOTOCELLS FOR INDIVIDUALLY VIEWING DIFFERENT PORTIONS OF A VIEWING AREA AND DEVELOPING ELECTRICAL SIGNALS REPRESENTATIVE OF THE INTENSITY OF LIGHT AT SAID DIFFERENT PORTIONS, AND POLARITY SENSITIVE MEANS FOR AUTOMATICALLY SELECTING THAT ELECTRICAL SIGNAL REPRESENTATIVE OF THE PORTIONS OF THE
Claim 2
Dependent Claim
55 words
APPARATUS FOR USE WITH AN ELECTRICALLY OPERATED CAMERA EXPOSURE CONTROL MECHANISM COMPRISING: A PLURALITY OF PHOTOCELLS FOR INDIVIDUALLY VIEWING DIFFERENT PORTIONS OF A VIEWING AREA AND DEVELOPING ELECTRICAL SIGNALS REPRESENTATIVE OF THE INTENSITY OF LIGHT AT SAID DIFFERENT PORTIONS, AND POLARITY SENSITIVE MEANS FOR AUTOMATICALLY SELECTING THAT ELECTRICAL SIGNAL REPRESENTATIVE OF THE PORTIONS OF THE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |