Patent US1377140A successfully refreshed from Google Patents.
Patent CH303993A successfully refreshed from Google Patents.
Patent US1421743A successfully refreshed from Google Patents.
Patent US2765398A successfully refreshed from Google Patents.
Patent US2846699A successfully refreshed from Google Patents.
Patent US2393407A successfully refreshed from Google Patents.
US2393407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically controlled camera diaphragm
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1944-06-15
•
Granted: 1946-01-22
•
Expires: 1964-06-15
Abstract
No abstract record available.
Inventors
- 👤 Edward S Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:44
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-01-21 | 1949-07-23 | 1950-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-21 | 1953-07-23 | 1954-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-21 | 1957-07-23 | 1958-01-22 | $7700.00 | Window Closed / Lapsed |