Patent US2447684A successfully refreshed from Google Patents.
US2447684A
Expired / Lapsed
US
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Apparatus for processing photographic articles
Assignee: Individual
•
Filing: 1945-07-26
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Granted: 1948-08-24
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Expires: 1965-07-26
Abstract
No abstract record available.
Inventors
- 👤 David C Brown
- 👤 Weldon M Paige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:50
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D3/00; G03D3/02; G03D3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US339991A
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US430242A
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US435681A
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US736766A
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FR382256A
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GB191007475A
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US1401026A
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US1863132A
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US2004410A
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US1974890A
Cited
US2005449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |