US3383566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diode control of voltage in an exposure control circuit
Assignee: Bell and Howell Co
•
Filing: 1964-12-02
•
Granted: 1968-05-14
•
Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Ciemniak Felix
- 👤 William A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:54
CPC Classifications
G; G03; G03B; G03B43/00; G03B7/00; G03B7/26; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2032455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |