US2655848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically controlled photoelectric iris
Assignee: Individual
•
Filing: 1950-02-09
•
Granted: 1953-10-20
•
Expires: 1970-02-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard A Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:55
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/081; G03B7/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1934484A
Cited
US1919182A
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US1970103A
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US2030854A
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US2183217A
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US2140355A
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US2086964A
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US2184016A
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GB491410A
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US2232373A
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US2238762A
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US2477235A
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US2388609A
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US2421476A
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US2412424A
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US2472815A
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US2534769A
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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) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |