US2838997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic image copying method
Assignee: RCA Corp
•
Filing: 1953-10-30
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Granted: 1958-06-17
•
Expires: 1973-10-30
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Moncrieff-Yeates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G13/00; G03G13/06; G03G13/08; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1818760A
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US2297691A
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US2233037A
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US2633796A
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GB605979A
Cited
US2618551A
Cited
US2573881A
Cited
US2681473A
Cited
US2663636A
Cited
US2647464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |