US2661671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashing unit assembly for photographic exposure equipment
Assignee: Graflex Inc
•
Filing: 1948-04-22
•
Granted: 1953-12-08
•
Expires: 1968-04-22
Abstract
No abstract record available.
Inventors
- 👤 Jacobson Irving
- 👤 Clinton F Brundage
- 👤 Milford R Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920968A
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FR778757A
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US2268380A
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US2302031A
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US2329011A
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US2371479A
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US2350258A
Cited
US2437373A
Cited
US2496880A
Cited
US2467591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |