US2469009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual fine focusing means for autofocus enlargers
Assignee: Simmon Brothers Inc
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Filing: 1946-02-26
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Granted: 1949-05-03
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Expires: 1966-02-26
Abstract
No abstract record available.
Inventors
- 👤 Simmon Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:42
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/34; G03B27/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |