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Patent US2393534A successfully refreshed from Google Patents.
US2393534A
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Electric-motor-driven combined camera focal-plane shutter and film feed
Assignee: GRAFIEX Inc
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Filing: 1943-10-19
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Granted: 1946-01-22
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Expires: 1963-10-19
Abstract
No abstract record available.
Inventors
- 👤 Edson S Hineline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:32
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 0
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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 |