US2583546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic recording
Assignee: Individual
•
Filing: 1948-05-12
•
Granted: 1952-01-29
•
Expires: 1968-05-12
Abstract
No abstract record available.
Inventors
- 👤 Chester F Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:53
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; H; H04; H04N; H04N1/00; H04N1/23; H04N1/29; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1897796A
Cited
US2052383A
Cited
GB456810A
Cited
US2143214A
Cited
US2197050A
Cited
US2200741A
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US2297398A
Cited
US2277013A
Cited
US2283148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |