US2789905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera for producing screen positive
Assignee: Individual
•
Filing: 1952-05-12
•
Granted: 1957-04-23
•
Expires: 1972-05-12
Abstract
No abstract record available.
Inventors
- 👤 Lucien C Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:42
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1513379A
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US1732051A
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US2039195A
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DE711572C
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DE716362C
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US2387048A
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US2482638A
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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) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |