Patent US3069681A successfully refreshed from Google Patents.
US3069681A
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US
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System for large-area display of two-color information
Assignee: TDK Micronas GmbH
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Filing: 1960-03-14
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Granted: 1962-12-18
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Expires: 1980-03-14
Abstract
No abstract record available.
Inventors
- 👤 William R Sloan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:31
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/50; H04N1/506; G; G09; G09F; G09F13/00; G09G; G09G1/00; G09G1/06; G09G1/14; G09G1/18; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/16; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2752833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |