Patent JPS61159953A successfully refreshed from Google Patents.
US2841064A
Expired / Lapsed
US
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Exposure control for photographic cameras
Assignee: Bell and Howell Co
•
Filing: 1957-08-13
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Granted: 1958-07-01
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Expires: 1977-08-13
Abstract
No abstract record available.
Inventors
- 👤 John P Bagby
- 👤 Stanley R Freeland
- 👤 Jr Mervin W La Rue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:18
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/081; G03B7/085
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |