US2424176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portrait camera with automatic iris diaphragm operation
Assignee: Graflex Inc
•
Filing: 1946-01-23
•
Granted: 1947-07-15
•
Expires: 1966-01-23
Abstract
No abstract record available.
Inventors
- 👤 William S Kals
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:54
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US304503A
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US1313872A
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US668888A
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US716021A
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US929671A
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US1033834A
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US1051591A
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US1361031A
Cited
US1857706A
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US2354168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |