Patent US4597153A successfully refreshed from Google Patents.
Patent US2661998A successfully refreshed from Google Patents.
US2661998A
Expired / Lapsed
US
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Electric marking method, apparatus, and carrier for facsimile systems and the like
Assignee: RCA Corp
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Filing: 1949-04-30
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Granted: 1953-12-08
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Expires: 1969-04-30
Abstract
No abstract record available.
Inventors
- 👤 Pessel Leopold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:06
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/23; B; B41; B41M; B41M5/00; Y; Y10; Y10S; Y10S101/00; Y10S101/29; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934; Y10T428/31504; Y10T428/31971; Y10T428/31993
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) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |